This schema is the first official release that includes an xsd and requires unit class, unit modifier, value class, schema attribute and property sections.
Event
Something that happens at a given time and (typically) place. Elements of this tag subtree designate the general category in which an event falls.
suggestedTag
Task-property
Sensory-event
Something perceivable by the participant. An event meant to be an experimental stimulus should include the tag Task-property/Task-event-role/Experimental-stimulus.
suggestedTag
Task-event-role
Attribute/Sensory
Agent-action
Any action engaged in by an agent (see the Agent subtree for agent categories). A participant response to an experiment stimulus should include the tag Agent-property/Agent-task-role/Experiment-participant.
suggestedTag
Task-event-role
Agent
Data-feature
An event marking the occurrence of a data feature such as an interictal spike or alpha burst that is often added post hoc to the data record.
suggestedTag
Data-property
Experiment-control
An event pertaining to the physical control of the experiment during its operation.
Experiment-procedure
An event indicating an experimental procedure, as in performing a saliva swab during the experiment or administering a survey.
Experiment-structure
An event specifying a change-point of the structure of experiment. This event is typically used to indicate a change in experimental conditions or tasks.
Measurement-event
A discrete measure returned by an instrument.
suggestedTag
Data-property
Agent
Someone or something that takes an active role or produces a specified effect.The role or effect may be implicit. Being alive or performing an activity such as a computation may qualify something to be an agent. An agent may also be something that simulates something else.
suggestedTag
Agent-property
Animal-agent
An agent that is an animal.
Avatar-agent
An agent associated with an icon or avatar representing another agent.
Controller-agent
An agent experiment control software or hardware.
Human-agent
A person who takes an active role or produces a specified effect.
Robotic-agent
An agent mechanical device capable of performing a variety of often complex tasks on command or by being programmed in advance.
Software-agent
An agent computer program.
Action
Do something.
extensionAllowed
Communicate
Convey knowledge of or information about something.
Communicate-gesturally
Communicate nonverbally using visible bodily actions, either in place of speech or together and in parallel with spoken words. Gestures include movement of the hands, face, or other parts of the body.
relatedTag
Move-face
Move-upper-extremity
Clap-hands
Strike the palms of against one another resoundingly, and usually repeatedly, especially to express approval.
Clear-throat
Cough slightly so as to speak more clearly, attract attention, or to express hesitancy before saying something awkward.
relatedTag
Move-face
Move-head
Frown
Express disapproval, displeasure, or concentration, typically by turning down the corners of the mouth.
relatedTag
Move-face
Grimace
Make a twisted expression, typically expressing disgust, pain, or wry amusement.
relatedTag
Move-face
Nod-head
Tilt head in alternating up and down arcs along the sagittal plane. It is most commonly, but not universally, used to indicate agreement, acceptance, or acknowledgement.
relatedTag
Move-head
Pump-fist
Raise with fist clenched in triumph or affirmation.
relatedTag
Move-upper-extremity
Raise-eyebrows
Move eyebrows upward.
relatedTag
Move-face
Move-eyes
Shake-fist
Clench hand into a fist and shake to demonstrate anger.
relatedTag
Move-upper-extremity
Shake-head
Turn head from side to side as a way of showing disagreement or refusal.
relatedTag
Move-head
Shhh
Place finger over lips and possibly uttering the syllable shhh to indicate the need to be quiet.
relatedTag
Move-upper-extremity
Shrug
Lift shoulders up towards head to indicate a lack of knowledge about a particular topic.
relatedTag
Move-upper-extremity
Move-torso
Smile
Form facial features into a pleased, kind, or amused expression, typically with the corners of the mouth turned up and the front teeth exposed.
relatedTag
Move-face
Spread-hands
Spread hands apart to indicate ignorance.
relatedTag
Move-upper-extremity
Thumbs-down
Extend the thumb downward to indicate disapproval.
relatedTag
Move-upper-extremity
Thumb-up
Extend the thumb upward to indicate approval.
relatedTag
Move-upper-extremity
Wave
Raise hand and move left and right, as a greeting or sign of departure.
relatedTag
Move-upper-extremity
Widen-eyes
Open eyes and possibly with eyebrows lifted especially to express surprise or fear.
relatedTag
Move-face
Move-eyes
Wink
Close and open one eye quickly, typically to indicate that something is a joke or a secret or as a signal of affection or greeting.
relatedTag
Move-face
Move-eyes
Communicate-musically
Communicate using music.
Hum
Make a low, steady continuous sound like that of a bee. Sing with the lips closed and without uttering speech.
Play-instrument
Make musical sounds using an instrument.
Sing
Produce musical tones by means of the voice.
Vocalize
Utter vocal sounds.
Whistle
Produce a shrill clear sound by forcing breath out or air in through the puckered lips.
Communicate-vocally
Communicate using mouth or vocal cords.
Cry
Shed tears associated with emotions, usually sadness but also joy or frustration.
Groan
Make a deep inarticulate sound in response to pain or despair.
Laugh
Make the spontaneous sounds and movements of the face and body that are the instinctive expressions of lively amusement and sometimes also of contempt or derision.
Scream
Make loud, vociferous cries or yells to express pain, excitement, or fear.
Shout
Say something very loudly.
Sigh
Emit a long, deep, audible breath expressing sadness, relief, tiredness, or a similar feeling.
Speak
Communicate using spoken language.
Whisper
Speak very softly using breath without vocal cords.
Move
Move in a specified direction or manner. Change position or posture.
Breathe
Inhale or exhale during respiration.
Blow
Expel air through pursed lips.
Cough
Suddenly and audibly expel air from the lungs through a partially closed glottis, preceded by inhalation.
Exhale
Blow out or expel breath.
Hiccup
Involuntarily spasm the diaphragm and respiratory organs, with a sudden closure of the glottis and a characteristic sound like that of a cough.
Hold-breath
Interrupt normal breathing by ceasing to inhale or exhale.
Inhale
Draw in with the breath through the nose or mouth.
Sneeze
Suddenly and violently expel breath through the nose and mouth.
Sniff
Draw in air audibly through the nose to detect a smell, to stop it from running, or to express contempt.
Move-body
Move entire body.
Bend
Move body in a bowed or curved manner.
Dance
Perform a purposefully selected sequences of human movement often with aesthetic or symbolic value. Move rhythmically to music, typically following a set sequence of steps.
Fall-down
Lose balance and collapse.
Flex
Cause a muscle to stand out by contracting or tensing it. Bend a limb or joint.
Jerk
Make a quick, sharp, sudden movement.
Lie-down
Move to a horizontal or resting position.
Recover-balance
Return to a stable, upright body position.
Sit-down
Move from a standing to a sitting position.
Sit-up
Move from lying down to a sitting position.
Stand-up
Move from a sitting to a standing position.
Stretch
Straighten or extend body or a part of body to its full length, typically so as to tighten muscles or in order to reach something.
Shudder
Tremble convulsively, sometimes as a result of fear or revulsion.
Stumble
Trip or momentarily lose balance and almost fall.
Turn
Change or cause to change direction.
Move-body-part
Move one part of a body.
Move-eyes
Move eyes.
Blink
Shut and open the eyes quickly.
Close-eyes
Lower and keep eyelids in a closed position.
Fixate
Direct eyes to a specific point or target.
Inhibit-blinks
Purposely prevent blinking.
Open-eyes
Raise eyelids to expose pupil.
Saccade
Move eyes rapidly between fixation points.
Squint
Squeeze one or both eyes partly closed in an attempt to see more clearly or as a reaction to strong light.
Stare
Look fixedly or vacantly at someone or something with eyes wide open.
Move-face
Move the face or jaw.
Bite
Seize with teeth or jaws an object or organism so as to grip or break the surface covering.
Burp
Noisily release air from the stomach through the mouth. Belch.
Chew
Repeatedly grinding, tearing, and or crushing with teeth or jaws.
Gurgle
Make a hollow bubbling sound like that made by water running out of a bottle.
Swallow
Cause or allow something, especially food or drink to pass down the throat.
Gulp
Swallow quickly or in large mouthfuls, often audibly, sometimes to indicate apprehension.
Yawn
Take a deep involuntary inhalation with the mouth open often as a sign of drowsiness or boredom.
Move-head
Move head.
Lift-head
Tilt head back lifting chin.
Lower-head
Move head downward so that eyes are in a lower position.
Turn-head
Rotate head horizontally to look in a different direction.
Move-lower-extremity
Move leg and/or foot.
Curl-toes
Bend toes sometimes to grip.
Hop
Jump on one foot.
Jog
Run at a trot to exercise.
Jump
Move off the ground or other surface through sudden muscular effort in the legs.
Kick
Strike out or flail with the foot or feet. Strike using the leg, in unison usually with an area of the knee or lower using the foot.
Pedal
Move by working the pedals of a bicycle or other machine.
Press-foot
Move by pressing foot.
Run
Travel on foot at a fast pace.
Step
Put one leg in front of the other and shift weight onto it.
Heel-strike
Strike the ground with the heel during a step.
Toe-off
Push with toe as part of a stride.
Trot
Run at a moderate pace, typically with short steps.
Walk
Move at a regular pace by lifting and setting down each foot in turn never having both feet off the ground at once.
Move-torso
Move body trunk.
Move-upper-extremity
Move arm, shoulder, and/or hand.
Drop
Let or cause to fall vertically.
Grab
Seize suddenly or quickly. Snatch or clutch.
Grasp
Seize and hold firmly.
Hold-down
Prevent someone or something from moving by holding them firmly.
Lift
Raising something to higher position.
Make-fist
Close hand tightly with the fingers bent against the palm.
Point
Draw attention to something by extending a finger or arm.
Press
Apply pressure to something to flatten, shape, smooth or depress it. This action tag should be used to indicate key presses and mouse clicks.
relatedTag
Push
Push
Apply force in order to move something away. Use Press to indicate a key press or mouse click.
relatedTag
Press
Reach
Stretch out your arm in order to get or touch something.
Release
Make available or set free.
Retract
Draw or pull back.
Scratch
Drag claws or nails over a surface or on skin.
Snap-fingers
Make a noise by pushing second finger hard against thumb and then releasing it suddenly so that it hits the base of the thumb.
Touch
Come into or be in contact with.
Perceive
Produce an internal, conscious image through stimulating a sensory system.
Hear
Give attention to a sound.
See
Direct gaze toward someone or something or in a specified direction.
Smell
Inhale in order to ascertain an odor or scent.
Taste
Sense a flavor in the mouth and throat on contact with a substance.
Sense-by-touch
Sense something through receptors in the skin.
Perform
Carry out or accomplish an action, task, or function.
Close
Act as to blocked against entry or passage.
Collide-with
Hit with force when moving.
Halt
Bring or come to an abrupt stop.
Modify
Change something.
Open
Widen an aperture, door, or gap, especially one allowing access to something.
Operate
Control the functioning of a machine, process, or system.
Play
Engage in activity for enjoyment and recreation rather than a serious or practical purpose.
Read
Interpret something that is written or printed.
Repeat
Make do or perform again.
Rest
Be inactive in order to regain strength, health, or energy.
Write
Communicate or express by means of letters or symbols written or imprinted on a surface.
Think
Direct the mind toward someone or something or use the mind actively to form connected ideas.
Allow
Allow access to something such as allowing a car to pass.
Attend-to
Focus mental experience on specific targets.
Count
Tally items either silently or aloud.
Deny
Refuse to give or grant something requested or desired by someone.
Detect
Discover or identify the presence or existence of something.
Discriminate
Recognize a distinction.
Encode
Convert information or an instruction into a particular form.
Evade
Escape or avoid, especially by cleverness or trickery.
Generate
Cause something, especially an emotion or situation to arise or come about.
Identify
Establish or indicate who or what someone or something is.
Imagine
Form a mental image or concept of something.
Judge
Evaluate evidence to make a decision or form a belief.
Learn
Adaptively change behavior as the result of experience.
Memorize
Adaptively change behavior as the result of experience.
Plan
Think about the activities required to achieve a desired goal.
Predict
Say or estimate that something will happen or will be a consequence of something without having exact informaton.
Recognize
Identify someone or something from having encountered them before.
Respond
React to something such as a treatment or a stimulus.
Recall
Remember information by mental effort.
Switch-attention
Transfer attention from one focus to another.
Track
Follow a person, animal, or object through space or time.
Item
An independently existing thing (living or nonliving).
extensionAllowed
Biological-item
An entity that is biological, that is related to living organisms.
Anatomical-item
A biological structure, system, fluid or other substance excluding single molecular entities.
Body-part
Any part of an organism.
Head
The upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.
Hair
The filamentous outgrowth of the epidermis.
Ear
A sense organ needed for the detection of sound and for establishing balance.
Face
The anterior portion of the head extending from the forehead to the chin and ear to ear. The facial structures contain the eyes, nose and mouth, cheeks and jaws.
Cheek
The fleshy part of the face bounded by the eyes, nose, ear, and jaw line.
Chin
The part of the face below the lower lip and including the protruding part of the lower jaw.
Eye
The organ of sight or vision.
Eyebrow
The arched strip of hair on the bony ridge above each eye socket.
Forehead
The part of the face between the eyebrows and the normal hairline.
Lip
Fleshy fold which surrounds the opening of the mouth.
Nose
A structure of special sense serving as an organ of the sense of smell and as an entrance to the respiratory tract.
Mouth
The proximal portion of the digestive tract, containing the oral cavity and bounded by the oral opening.
Teeth
The hard bonelike structures in the jaws. A collection of teeth arranged in some pattern in the mouth or other part of the body.
Lower-extremity
Refers to the whole inferior limb (leg and/or foot).
Ankle
A gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus.
Calf
The fleshy part at the back of the leg below the knee.
Foot
The structure found below the ankle joint required for locomotion.
Big-toe
The largest toe on the inner side of the foot.
Heel
The back of the foot below the ankle.
Instep
The part of the foot between the ball and the heel on the inner side.
Little-toe
The smallest toe located on the outer side of the foot.
Toes
The terminal digits of the foot.
Knee
A joint connecting the lower part of the femur with the upper part of the tibia.
Shin
Front part of the leg below the knee.
Thigh
Upper part of the leg between hip and knee.
Torso
The body excluding the head and neck and limbs.
Torso-back
The rear surface of the human body from the shoulders to the hips.
Buttocks
The round fleshy parts that form the lower rear area of a human trunk.
Torso-chest
The anterior side of the thorax from the neck to the abdomen.
Gentalia
The external organs of reproduction.
Hip
The lateral prominence of the pelvis from the waist to the thigh.
Waist
The abdominal circumference at the navel.
Upper-extremity
Refers to the whole superior limb (shoulder, arm, elbow, wrist, hand).
Elbow
A type of hinge joint located between the forearm and upper arm.
Forearm
Lower part of the arm between the elbow and wrist.
Hand
The distal portion of the upper extremity. It consists of the carpus, metacarpus, and digits.
Finger
Any of the digits of the hand.
Index-finger
The second finger from the radial side of the hand, next to the thumb.
Little-finger
The fifth and smallest finger from the radial side of the hand.
Middle-finger
The middle or third finger from the radial side of the hand.
Ring-finger
The fourth finger from the radial side of the hand.
Thumb
The thick and short hand digit which is next to the index finger in humans.
Palm
The part of the inner surface of the hand that extends from the wrist to the bases of the fingers.
Knuckles
A part of a finger at a joint where the bone is near the surface, especially where the finger joins the hand.
Shoulder
Joint attaching upper arm to trunk.
Upper-arm
Portion of arm between shoulder and elbow.
Wrist
A joint between the distal end of the radius and the proximal row of carpal bones.
Organism
A living entity, more specifically a biological entity that consists of one or more cells and is capable of genomic replication (independently or not).
Animal
A living organism that has membranous cell walls, requires oxygen and organic foods, and is capable of voluntary movement.
Human
The bipedal primate mammal Homo sapiens.
Plant
Any living organism that typically synthesizes its food from inorganic substances and possesses cellulose cell walls.
Language-item
An entity related to a systematic means of communicating by the use of sounds, symbols, or gestures.
suggestedTag
Attribute/Sensory
Character
A mark or symbol used in writing.
Clause
A unit of grammatical organization next below the sentence in rank, usually consisting of a subject and predicate.
Glyph
A hieroglyphic character, symbol, or pictograph.
Nonword
A group of letters or speech sounds that looks or sounds like a word but that is not accepted as such by native speakers.
Paragraph
A distinct section of a piece of writing, usually dealing with a single theme.
Phoneme
A speech sound that is distinguished by the speakers of a particular language.
Phrase
A phrase is a group of words functioning as a single unit in the syntax of a sentence.
Sentence
A set of words that is complete in itself, conveying a statement, question, exclamation, or command and typically containing an explicit or implied subject and a predicate containing a finite verb.
Syllable
A unit of spoken language larger than a phoneme.
Textblock
A block of text.
Word
A word is the smallest free form (an item that may be expressed in isolation with semantic or pragmatic content) in a language.
Object
Something perceptible by one or more of the senses, especially by vision or touch. A material thing.
suggestedTag
Attribute/Sensory
Geometric-object
An object or a representation that has structure and topology in space.
Pattern
An arrangement of objects, facts, behaviors, or other things which have scientific, mathematical, geometric, statistical, or other meaning.
Dots
A small round mark or spot.
LED-pattern
A pattern created by lighting selected members of a fixed light emitting diode array.
2D-shape
A planar, two-dimensional shape.
Clockface
The dial face of a clock. A location identifier based on clockface numbering or anatomic subregion.
Cross
A figure or mark formed by two intersecting lines crossing at their midpoints.
Dash
A horizontal stroke in writing or printing to mark a pause or break in sense or to represent omitted letters or words.
Ellipse
A closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it, especially a plane not parallel to the base.
Circle
A ring-shaped structure with every point equidistant from the center.
Rectangle
A parallelogram with four right angles.
Square
A square is a special rectangle with four equal sides.
Single-point
A point is a geometric entity that is located in a zero-dimensional spatial region and whose position is defined by its coordinates in some coordinate system.
Star
A conventional or stylized representation of a star, typically one having five or more points.
Triangle
A three-sided polygon.
3D-shape
A geometric three-dimensional shape.
Box
A square or rectangular vessel, usually made of cardboard or plastic.
Cube
A solid or semi-solid in the shape of a three dimensional square.
Cone
A shape whose base is a circle and whose sides taper up to a point.
Cylinder
A surface formed by circles of a given radius that are contained in a plane perpendicular to a given axis, whose centers align on the axis.
Ellipsoid
A closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it, especially a plane not parallel to the base.
Sphere
A solid or hollow three-dimensional object bounded by a closed surface such that every point on the surface is equidistant from the center.
Pyramid
A polyhedron of which one face is a polygon of any number of sides, and the other faces are triangles with a common vertex.
Ingestible-object
Something that can be taken into the body by the mouth for digestion or absorption.
Man-made-object
Something constructed by human means.
Building
A structure that has a roof and walls and stands more or less permanently in one place.
Room
An area within a building enclosed by walls and floor and ceiling.
Roof
A roof is the covering on the uppermost part of a building which provides protection from animals and weather, notably rain, but also heat, wind and sunlight.
Entrance
The means or place of entry.
Attic
A room or a space immediately below the roof of a building.
Basement
The part of a building that is wholly or partly below ground level.
Clothing
A covering designed to be worn on the body.
Device
An object contrived for a specific purpose.
Assistive-device
A device that help an individual accomplish a task.
Glasses
Frames with lenses worn in front of the eye for vision correction, eye protection, or protection from UV rays.
Writing-device
A device used for writing.
Pen
A common writing instrument used to apply ink to a surface for writing or drawing.
Pencil
An implement for writing or drawing that is constructed of a narrow solid pigment core in a protective casing that prevents the core from being broken or marking the hand.
Computing-device
An electronic device which take inputs and processes results from the inputs.
Cellphone
A telephone with access to a cellular radio system so it can be used over a wide area, without a physical connection to a network.
Desktop-computer
A computer suitable for use at an ordinary desk.
Laptop-computer
A computer that is portable and suitable for use while traveling.
Tablet-computer
A small portable computer that accepts input directly on to its screen rather than via a keyboard or mouse.
Engine
A motor is a machine designed to convert one or more forms of energy into mechanical energy.
IO-device
Hardware used by a human (or other system) to communicate with a computer.
Input-device
A piece of equipment used to provide data and control signals to an information processing system such as a computer or information appliance.
Computer-mouse
A hand-held pointing device that detects two-dimensional motion relative to a surface.
Mouse-button
An electric switch on a computer mouse which can be pressed or clicked to select or interact with an element of a graphical user interface.
Scroll-wheel
A scroll wheel or mouse wheel is a wheel used for scrolling made of hard plastic with a rubbery surface usually located between the left and right mouse buttons and is positioned perpendicular to the mouse surface.
Joystick
A control device that uses a movable handle to create two-axis input for a computer device.
Keyboard
A device consisting of mechanical keys that are pressed to create input to a computer.
Keyboard-key
A button on a keyboard usually representing letters, numbers, functions, or symbols.
#
Value of a keyboard key.
takesValue
Keypad
A device consisting of keys, usually in a block arrangement, that provides limited input to a system.
Keypad-key
A key on a separate section of a computer keyboard that groups together numeric keys and those for mathematical or other special functions in an arrangement like that of a calculator.
#
Value of keypad key.
takesValue
Microphone
A device designed to convert sound to an electrical signal.
Push-button
A switch designed to be operated by pressing a button.
Output-device
Any piece of computer hardware equipment which converts information into human understandable form.
Display-device
An output device for presentation of information in visual or tactile form the latter used for example in tactile electronic displays for blind people.
Head-mounted-display
An instrument that functions as a display device, worn on the head or as part of a helmet, that has a small display optic in front of one (monocular HMD) or each eye (binocular HMD).
LED-display
A LED display is a flat panel display that uses an array of light-emitting diodes as pixels for a video display.
Computer-screen
An electronic device designed as a display or a physical device designed to be a protective meshwork.
Screen-window
A part of a computer screen that contains a display different from the rest of the screen. A window is a graphical control element consisting of a visual area containing some of the graphical user interface of the program it belongs to and is framed by a window decoration.
Auditory-device
A device designed to produce sound.
Headphones
An instrument that consists of a pair of small loudspeakers, or less commonly a single speaker, held close to ears and connected to a signal source such as an audio amplifier, radio, CD player or portable media player.
Loudspeaker
A device designed to convert electrical signals to sounds that can be heard.
Recording-device
A device that copies information in a signal into a persistent information bearer.
EEG-recorder
A device for recording electric currents in the brain using electrodes applied to the scalp, to the surface of the brain, or placed within the substance of the brain.
File-storage
A device for recording digital information to a permanent media.
MEG-recorder
A device for measuring the magnetic fields produced by electrical activity in the brain, usually conducted externally.
Motion-capture
A device for recording the movement of objects or people.
Tape-recorder
A device for recording and reproduction usually using magnetic tape for storage that can be saved and played back.
Touchscreen
A control component that operates an electronic device by pressing the display on the screen.
Machine
A human-made device that uses power to apply forces and control movement to perform an action.
Measurement-device
A device in which a measure function inheres.
Clock
A device designed to indicate the time of day or to measure the time duration of an event or action.
Clock-face
A location identifier based on clockface numbering or anatomic subregion.
Robot
A mechanical device that sometimes resembles a living animal and is capable of performing a variety of often complex human tasks on command or by being programmed in advance.
Tool
A component that is not part of a device but is designed to support its assemby or operation.
Document
A physical object, or electronic counterpart, that is characterized by containing writing which is meant to be human-readable.
Letter
A written message addressed to a person or organization.
Note
A brief written record.
Book
A volume made up of pages fastened along one edge and enclosed between protective covers.
Notebook
A book for notes or memoranda.
Furnishing
Furniture, fittings, and other decorative accessories, such as curtains and carpets, for a house or room.
Manufactured-material
Substances created or extracted from raw materials.
Ceramic
A hard, brittle, heat-resistant and corrosion-resistant material made by shaping and then firing a nonmetallic mineral, such as clay, at a high temperature.
Glass
A brittle transparent solid with irregular atomic structure.
Paper
A thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, rags, grasses or other vegetable sources in water.
Plastic
Various high-molecular-weight thermoplastic or thermosetting polymers that are capable of being molded, extruded, drawn, or otherwise shaped and then hardened into a form.
Steel
An alloy made up of iron with typically a few tenths of a percent of carbon to improve its strength and fracture resistance compared to iron.
Media
Media are audo/visual/audiovisual modes of communicating information for mass consumption.
Media-clip
A short segment of media.
Audio-clip
A short segment of audio.
Audiovisual-clip
A short media segment containing both audio and video.
Video-clip
A short segment of video.
Visualization
An planned process that creates images, diagrams or animations from the input data.
Animation
A form of graphical illustration that changes with time to give a sense of motion or represent dynamic changes in the portrayal.
Art-installation
A large-scale, mixed-media constructions, often designed for a specific place or for a temporary period of time.
Braille
A display using a system of raised dots that can be read with the fingers by people who are blind.
Image
Any record of an imaging event whether physical or electronic.
Cartoon
A type of illustration, sometimes animated, typically in a non-realistic or semi-realistic style. The specific meaning has evolved over time, but the modern usage usually refers to either an image or series of images intended for satire, caricature, or humor. A motion picture that relies on a sequence of illustrations for its animation.
Drawing
A representation of an object or outlining a figure, plan, or sketch by means of lines.
Icon
A sign (such as a word or graphic symbol) whose form suggests its meaning.
Painting
A work produced through the art of painting.
Photograph
An image recorded by a camera.
Movie
A sequence of images displayed in succession giving the illusion of continuous movement.
Outline-visualization
A visualization consisting of a line or set of lines enclosing or indicating the shape of an object in a sketch or diagram.
Point-light-visualization
A display in which action is depicted using a few points of light, often generated from discrete sensors in motion capture.
Sculpture
A two- or three-dimensional representative or abstract forms, especially by carving stone or wood or by casting metal or plaster.
Stick-figure-visualization
A drawing showing the head of a human being or animal as a circle and all other parts as straight lines.
Navigational-object
An object whose purpose is to assist directed movement from one location to another.
Path
A trodden way. A way or track laid down for walking or made by continual treading.
Road
An open way for the passage of vehicles, persons, or animals on land.
Lane
A defined path with physical dimensions through which an object or substance may traverse.
Runway
A paved strip of ground on a landing field for the landing and takeoff of aircraft.
Vehicle
A mobile machine which transports people or cargo.
Aircraft
A vehicle which is able to travel through air in an atmosphere.
Bicycle
A human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other.
Boat
A watercraft of any size which is able to float or plane on water.
Car
A wheeled motor vehicle used primarily for the transportation of human passengers.
Cart
A cart is a vehicle which has two wheels and is designed to transport human passengers or cargo.
Tractor
A mobile machine specifically designed to deliver a high tractive effort at slow speeds, and mainly used for the purposes of hauling a trailer or machinery used in agriculture or construction.
Train
A connected line of railroad cars with or without a locomotive.
Truck
A motor vehicle which, as its primary funcion, transports cargo rather than human passangers.
Natural-object
Something that exists in or is produced by nature, and is not artificial or man-made.
Mineral
A solid, homogeneous, inorganic substance occurring in nature and having a definite chemical composition.
Natural-feature
A feature that occurs in nature. A prominent or identifiable aspect, region, or site of interest.
Field
An unbroken expanse as of ice or grassland.
Hill
A rounded elevation of limited extent rising above the surrounding land with local relief of less than 300m.
Mountain
A landform that extends above the surrounding terrain in a limited area.
River
A natural freshwater surface stream of considerable volume and a permanent or seasonal flow, moving in a definite channel toward a sea, lake, or another river.
Waterfall
A sudden descent of water over a step or ledge in the bed of a river.
Sound
Mechanical vibrations transmitted by an elastic medium. Something that can be heard.
Environmental-sound
Sounds occuring in the environment. An accumulation of noise pollution that occurs outside. This noise can be caused by transport, industrial, and recreational activities.
Crowd-sound
Noise produced by a mixture of sounds from a large group of people.
Signal-noise
Any part of a signal that is not the true or original signal but is introduced by the communication mechanism.
Musical-sound
Sound produced by continuous and regular vibrations, as opposed to noise.
Tone
A musical note, warble, or other sound used as a particular signal on a telephone or answering machine.
Instrument-sound
Sound produced by a musical instrument.
Vocalized-sound
Musical sound produced by vocal cords in a biological agent.
Named-animal-sound
A sound recognizable as being associated with particular animals.
Barking
Sharp explosive cries like sounds made by certain animals, especially a dog, fox, or seal.
Bleating
Wavering cries like sounds made by a sheep, goat, or calf.
Crowing
Loud shrill sounds characteristic of roosters.
Chirping
Short, sharp, high-pitched noises like sounds made by small birds or an insects.
Growling
Low guttural sounds like those that made in the throat by a hostile dog or other animal.
Meowing
Vocalizations like those made by as those cats. These sounds have diverse tones and are sometimes chattered, murmured or whispered. The purpose can be assertive.
Mooing
Deep vocal sounds like those made by a cow.
Purring
Low continuous vibratory sound such as those made by cats. The sound expresses contentment.
Roaring
Loud, deep, or harsh prolonged sounds such as those made by big cats and bears for long-distance communication and intimidation.
Squawking
Loud, harsh noises such as those made by geese.
Named-object-sound
A sound identifiable as coming from a particular type of object.
Alarm-sound
A loud signal often loud continuous ringing to alert people to a problem or condition that requires urgent attention.
Beep
A short, single tone, that is typically high-pitched and generally made by a computer or other machine.
Buzz
A persistent vibratory sound often made by a buzzer device and used to indicate something incorrect.
Ka-ching
The sound made by a mechanical cash register, often to designate a reward.
Click
The sound made by a mechanical cash register, often to designate a reward.
Ding
A short ringing sound such as that made by a bell, often to indicate a correct response or the expiration of time.
Horn-blow
A loud sound made by forcing air through a sound device that funnels air to create the sound, often used to sound an alert.
Siren
A loud, continuous sound often varying in frequency designed to indicate an emergency.
Property
Something that pertains to a thing. A characteristic of some entity. A quality or feature regarded as a characteristic or inherent part of someone or something. HED attributes are adjectives or adverbs.
extensionAllowed
Agent-property
Something that pertains to an agent.
extensionAllowed
Agent-state
The state of the agent.
Agent-cognitive-state
The state of the cognitive processes or state of mind of the agent.
Alert
Condition of heightened watchfulness or preparation for action.
Anesthetized
Having lost sensation to pain or having senses dulled due to the effects of an anesthetic.
Asleep
Having entered a periodic, readily reversible state of reduced awareness and metabolic activity, usually accompanied by physical relaxation and brain activity.
Attentive
Concentrating and focusing mental energy on the task or surroundings.
Awake
In a non sleeping state.
Brain-dead
Characterized by the irreversible absence of cortical and brain stem functioning.
Comatose
In a state of profound unconsciousness associated with markedly depressed cerebral activity.
Drowsy
In a state of near-sleep, a strong desire for sleep, or sleeping for unusually long periods.
Intoxicated
In a state with disturbed psychophysiological functions and responses as a result of administration or ingestion of a psychoactive substance.
Locked-in
In a state of complete paralysis of all voluntary muscles except for the ones that control the movements of the eyes.
Passive
Not responding or initiating an action in response to a stimulus.
Resting
A state in which the agent is not exhibiting any physical exertion.
Vegetative
A state of wakefulness and conscience, but (in contrast to coma) with involuntary opening of the eyes and movements (such as teeth grinding, yawning, or thrashing of the extremities).
Agent-emotional-state
The status of the general temperament and outlook of an agent.
Angry
Experiencing emotions characterized by marked annoyance or hostility.
Aroused
In a state reactive to stimuli leading to increased heart rate and blood pressure, sensory alertness, mobility and readiness to respond.
Awed
Filled with wonder. Feeling grand, sublime or powerful emotions characterized by a combination of joy, fear, admiration, reverence, and/or respect.
Compassionate
Feeling or showing sympathy and concern for others often evoked for a person who is in distress and associated with altruistic motivation.
Content
Feeling satisfaction with things as they are.
Disgusted
Feeling revulsion or profound disapproval aroused by something unpleasant or offensive.
Emotionally-neutral
Feeling neither satisfied nor dissatisfied.
Empathetic
Understanding and sharing the feelings of another. Being aware of, being sensitive to, and vicariously experiencing the feelings, thoughts, and experience of another.
Excited
Feeling great enthusiasm and eagerness.
Fearful
Feeling apprehension that one may be in danger.
Frustrated
Feeling annoyed as a result of being blocked, thwarted, disappointed or defeated.
Grieving
Feeling sorrow in response to loss, whether physical or abstract.
Happy
Feeling pleased and content.
Jealous
Feeling threatened by a rival in a relationship with another individual, in particular an intimate partner, usually involves feelings of threat, fear, suspicion, distrust, anxiety, anger, betrayal, and rejection.
Joyful
Feeling delight or intense happiness.
Loving
Feeling a strong positive emotion of affection and attraction.
Relieved
No longer feeling pain, distress, anxiety, or reassured.
Sad
Feeling grief or unhappiness.
Stressed
Experiencing mental or emotional strain or tension.
Agent-physiological-state
Having to do with the mechanical, physical, or biochemical function of an agent.
Healthy
Having no significant health-related issues.
relatedTag
Sick
Hungry
Being in a state of craving or desiring food.
relatedTag
Sated
Thirsty
Rested
Feeling refreshed and relaxed.
relatedTag
Tired
Sated
Feeling full.
relatedTag
Hungry
Sick
Being in a state of ill health, bodily malfunction, or discomfort.
relatedTag
Healthy
Thirsty
Feeling a need to drink.
relatedTag
Hungry
Tired
Feeling in need of sleep or rest.
relatedTag
Rested
Agent-postural-state
Pertaining to the position in which agent holds their body.
Crouching
Adopting a position where the knees are bent and the upper body is brought forward and down, sometimes to avoid detection or to defend oneself.
Eyes-closed
Keeping eyes closed with no blinking.
Eyes-open
Keeping eyes open with occasional blinking.
Kneeling
Positioned where one or both knees are on the ground.
On-treadmill
Ambulation on an exercise apparatus with an endless moving belt to support moving in place.
Prone
Positioned in a recumbent body position whereby the person lies on its stomach and faces downward.
Sitting
In a seated position.
Standing
Assuming or maintaining an erect upright position.
Seated-with-chin-rest
Using a device that supports the chin and head.
Agent-task-role
The function or part that is ascribed to an agent in performing the task.
Experiment-actor
An agent who plays a predetermined role to create the experiment scenario.
Experiment-controller
An agent exerting control over some aspect of the experiment.
Experiment-participant
Someone who takes part in an activity related to an experiment.
Experimenter
Person who is the owner of the experiment and has its responsibility.
Agent-trait
A genetically, environmentally, or socially determined characteristic of an agent.
Age
Length of time elapsed time since birth of the agent.
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takesValue
Agent-experience-level
Amount of skill or knowledge that the agent has as pertains to the task.
Expert-level
Having comprehensive and authoritative knowledge of or skill in a particular area related to the task.
relatedTag
Intermediate-experience-level
Novice-level
Intermediate-experience-level
Having a moderate amount of knowledge or skill related to the task.
relatedTag
Expert-level
Novice-level
Novice-level
Being inexperienced in a field or situation related to the task.
relatedTag
Expert-level
Intermediate-experience-level
Gender
Characteristics that are socially constructed, including norms, behaviors, and roles based on sex.
Sex
Physical properties or qualities by which male is distinguished from female.
Female
Biological sex of an individual with female sexual organs such ova.
Male
Biological sex of an individual with male sexual organs producing sperm.
Intersex
Having genitalia and/or secondary sexual characteristics of indeterminate sex.
Handedness
Individual preference for use of a hand, known as the dominant hand.
Left-handed
Preference for using the left hand or foot for tasks requiring the use of a single hand or foot.
Right-handed
Preference for using the right hand or foot for tasks requiring the use of a single hand or foot.
Ambidextrous
Having no overall dominance in the use of right or left hand or foot in the performance of tasks that require one hand or foot.
Data-property
Something that pertains to data or information.
extensionAllowed
Data-marker
An indicator placed to mark something.
Temporal-marker
An indicator placed at a particular time in the data.
Onset
Labels the start or beginning of something, usually an event.
topLevelTagGroup
Offset
Labels the time at which something stops.
topLevelTagGroup
Pause
Indicates the temporary interruption of the operation a process and subsequently wait for a signal to continue.
Time-out
A cancellation or cessation that automatically occurs when a predefined interval of time has passed without a certain event occurring.
Time-sync
A synchronization signal whose purpose to help synchronize different signals or processes. Often used to indicate a marker inserted into the recorded data to allow post hoc synchronization of concurrently recorded data streams.
Data-resolution
Smallest change in a quality being measured by an sensor that causes a perceptible change.
Printer-resolution
Resolution of a printer, usually expressed as the number of dots-per-inch for a printer.
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takesValue
Screen-resolution
Resolution of a screen, usually expressed as the of pixels in a dimension for a digital display device.
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takesValue
Sensory-resolution
Resolution of measurements by a sensing device.
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takesValue
Spatial-resolution
Linear spacing of a spatial measurement.
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takesValue
Spectral-resolution
Measures the ability of a sensor to resolve features in the electromagnetic spectrum.
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takesValue
Temporal-resolution
Measures the ability of a sensor to resolve features in time.
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takesValue
Data-source-type
The type of place, person, or thing from which the data comes or can be obtained.
Computed-feature
A feature computed from the data by a tool. This tag should be grouped with a label of the form Toolname_propertyName.
Computed-prediction
A computed extrapolation of known data.
Expert-annotation
An explanatory or critical comment or other in-context information provided by an authority.
Instrument-measurement
Information obtained from a device that is used to measure material properties or make other observations.
Observation
Active acquisition of information from a primary source. Should be grouped with a label of the form AgentID_featureName.
Data-value
Designation of the type of a data item.
Categorical-value
Indicates that something can take on a limited and usually fixed number of possible values.
Categorical-class-value
Categorical values that fall into discrete classes such as true or false. The grouping is absolute in the sense that it is the same for all participants.
All
To a complete degree or to the full or entire extent.
relatedTag
Some
None
Correct
Free from error. Especially conforming to fact or truth.
relatedTag
Incorrect
Explicit
Stated clearly and in detail, leaving no room for confusion or doubt.
relatedTag
Implicit
False
Not in accordance with facts, reality or definitive criteria.
relatedTag
True
Implicit
Implied though not plainly expressed.
relatedTag
Explicit
Invalid
Not true because based on erroneous information or unsound reasoning or not conforming to the correct format or specifications.
relatedTag
Valid
None
No person or thing, nobody, not any.
relatedTag
All
Some
Some
At least a small amount or number of, but not a large amount of, or often.
relatedTag
All
None
True
Conforming to facts, reality or definitive criteria.
relatedTag
False
Valid
Allowable, usable, or acceptable.
relatedTag
Invalid
Wrong
Not accurate, correct, or appropriate.
relatedTag
Correct
Categorical-judgment-value
Categorical values that are based on the judgment or perception of the participant such familiar and famous.
Abnormal
Deviating in any way from the state, position, structure, condition, behavior, or rule which is considered a norm.
relatedTag
Normal
Asymmetrical
Lacking symmetry or having parts that fail to correspond to one another in shape, size, or arrangement.
relatedTag
Symmetrical
Audible
A sound that can be perceived by the participant.
relatedTag
Inaudible
Congruent
Concordance of multiple evidence lines. In agreement or harmony.
relatedTag
Incongruent
Complex
Hard, involved or complicated, elaborate, having many parts.
relatedTag
Simple
Constrained
Keeping something within particular limits or bounds.
relatedTag
Unconstrained
Disordered
Not neatly arranged. Confused and untidy. A structural quality in which the parts of an object are non-rigid.
relatedTag
Ordered
Familiar
Recognized, familiar, or within the scope of knowledge.
relatedTag
Unfamiliar
Famous
Famous
A person who has a high degree of recognition by the general population for his or her success or accomplishments. A famous person.
relatedTag
Familiar
Unfamiliar
Inaudible
A sound below the threshold of perception of the participant.
relatedTag
Audible
Incongruent
Not in agreement or harmony.
relatedTag
Congruent
Involuntary
An action that is not made by choice. In the body, involuntary actions (such as blushing) occur automatically, and cannot be controlled by choice.
relatedTag
Voluntary
Masked
Information exists but is not provided or is partially obscured due to security, privacy, or other concerns.
relatedTag
Unmasked
Normal
Being approximately average or within certain limits. Conforming with or constituting a norm or standard or level or type or social norm.
relatedTag
Abnormal
Ordered
Conforming to a logical or comprehensible arrangement of separate elements.
relatedTag
Disordered
Simple
Easily understood or presenting no difficulties.
relatedTag
Complex
Symmetrical
Made up of exactly similar parts facing each other or around an axis. Showing aspects of symmetry.
relatedTag
Asymmetrical
Unconstrained
Moving without restriction.
relatedTag
Constrained
Unfamiliar
Not having knowledge or experience of.
relatedTag
Familiar
Famous
Unmasked
Information is revealed.
relatedTag
Masked
Voluntary
Using free will or design; not forced or compelled; controlled by individual volition.
relatedTag
Involuntary
Categorical-level-value
Categorical values based on dividing a continuous variable into levels such as high and low.
Cold
Characterized by an absence of heat.
relatedTag
Hot
Deep
Extending relatively far inward or downward.
relatedTag
Shallow
High
Having a greater than normal degree, intensity, or amount.
relatedTag
Low
Medium
Hot
Characterized by an excess of heat.
relatedTag
Cold
Liminal
Situated at a sensory threshold that is barely perceptible or capable of eliciting a response.
relatedTag
Subliminal
Supraliminal
Loud
Characterizing a perceived high intensity of sound.
relatedTag
Quiet
Low
Less than normal in degree, intensity or amount.
relatedTag
High
Medium
Mid-way between small and large in number, quantity, magnitude or extent.
relatedTag
Low
High
Negative
Involving disadvantage or harm.
relatedTag
Positive
Positive
Involving advantage or good.
relatedTag
Negative
Quiet
Characterizing a perceived low intensity of sound.
relatedTag
Loud
Rough
Having a surface with perceptible bumps, ridges, or irregularities.
relatedTag
Smooth
Shallow
Having a depth which is relatively low.
relatedTag
Deep
Smooth
Having a surface free from bumps, ridges, or irregularities.
relatedTag
Rough
Subliminal
Situated below a sensory threshold that is imperceptible or not capable of eliciting a response.
relatedTag
Liminal
Supraliminal
Supraliminal
Situated above a sensory threshold that is perceptible or capable of eliciting a response.
relatedTag
Liminal
Subliminal
Thick
Wide in width, extent or cross-section.
relatedTag
Thin
Thin
Narrow in width, extent or cross-section.
relatedTag
Thick
Categorical-orientation-value
Value indicating the orientation or direction of something.
Backward
Directed behind or to the rear.
relatedTag
Forward
Downward
Moving or leading toward a lower place or level.
relatedTag
Leftward
Rightward
Upward
Forward
At or near or directed toward the front.
relatedTag
Backward
Horizontally-oriented
Oriented parallel to or in the plane of the horizon.
Leftward
Going toward or facing the left.
relatedTag
Downward
Rightward
Upward
Oblique
Slanting or inclined in direction, course, or position that is neither parallel nor perpendicular nor right-angular.
relatedTag
Rotated
Rightward
Going toward or situated on the right.
relatedTag
Downward
Leftward
Upward
Rotated
Positioned offset around an axis or center.
Upward
Moving, pointing, or leading to a higher place, point, or level.
relatedTag
Downward
Leftward
Rightward
Vertically-oriented
Oriented perpendicular to the plane of the horizon.
Physical-value
The value of some physical property of something.
Weight
The relative mass or the quantity of matter contained by something.
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takesValue
unitClass
weightUnits
valueClass
numericClass
Quantitative-value
Something capable of being estimated or expressed with numeric values.
Fraction
A numerical value betwee 0 and 1.
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takesValue
valueClass
numericClass
Item-count
The integer count of something which is usually grouped with the entity it is counting. (Item-count/3, A) indicates that 3 of A have occurred up to this point.
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takesValue
valueClass
numericClass
Item-interval
An integer indicating how many items or entities have passed since the last one of these. An item interval of 0 indicates the current item.
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takesValue
valueClass
numericClass
Percentage
A fraction or ratio with 100 understood as the denominator.
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takesValue
valueClass
numericClass
Ratio
A quotient of quantities of the same kind for different components within the same system.
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takesValue
valueClass
numericClass
Statistical-value
A value based on or employing the principles of statistics.
extensionAllowed
Data-maximum
The largest possible quantity or degree.
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takesValue
valueClass
numericClass
Data-mean
The sum of a set of values divided by the number of values in the set.
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takesValue
valueClass
numericClass
Data-median
The value which has an equal number of values greater and less than it.
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takesValue
valueClass
numericClass
Data-minimum
The smallest possible quantity.
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takesValue
valueClass
numericClass
Probability
A measure of the expectation of the occurrence of a particular event.
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takesValue
valueClass
numericClass
Standard-deviation
A measure of the range of values in a set of numbers. Standard deviation is a statistic used as a measure of the dispersion or variation in a distribution, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean.
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takesValue
valueClass
numericClass
Statistical-accuracy
A measure of closeness to true value expressed as a number between 0 and 1.
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takesValue
valueClass
numericClass
Statistical-precision
A quantitative representation of the degree of accuracy necessary for or associated with a particular action.
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takesValue
valueClass
numericClass
Statistical-recall
Sensitivity is a measurement datum qualifying a binary classification test and is computed by substracting the false negative rate to the integral numeral 1.
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takesValue
valueClass
numericClass
Statistical-uncertainty
A measure of the inherent variability of repeated observation measurements of a quantity including quantities evaluated by statistical methods and by other means.
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takesValue
valueClass
numericClass
Spatiotemporal-value
A property relating to space and/or time.
Rate-of-change
The amount of change accumulated per unit time.
Acceleration
Magnitude of the rate of change in either speed or direction. The direction of change should be given separately.
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takesValue
unitClass
accelerationUnits
valueClass
numericClass
Frequency
Frequency is the number of occurrences of a repeating event per unit time.
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takesValue
unitClass
frequencyUnits
valueClass
numericClass
Jerk-rate
Magnitude of the rate at which the acceleration of an object changes with respect to time. The direction of change should be given separately.
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takesValue
unitClass
jerkUnits
valueClass
numericClass
Sampling-rate
The number of digital samples taken or recorded per unit of time.
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takesValue
unitClass
frequencyUnits
Refresh-rate
The frequency with which the image on a computer monitor or similar electronic display screen is refreshed, usually expressed in hertz.
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takesValue
valueClass
numericClass
Speed
A scalar measure of the rate of movement of the object expressed either as the distance travelled divided by the time taken (average speed) or the rate of change of position with respect to time at a particular point (instantaneous speed). The direction of change should be given separately.
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takesValue
unitClass
speedUnits
valueClass
numericClass
Temporal-rate
The number of items per unit of time.
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takesValue
unitClass
frequencyUnits
valueClass
numericClass
Spatial-value
Value of an item involving space.
Angle
The amount of inclination of one line to another or the plane of one object to another.
unitClass
angleUnits
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takesValue
valueClass
numericClass
Distance
A measure of the space separating two objects or points.
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takesValue
unitClass
physicalLengthUnits
valueClass
numericClass
Position
A reference to the alignment of an object, a particular situation or view of a situation, or the location of an object. Coordinates with respect a specified frame of reference or the default Screen-frame if no frame is given.
X-position
The position along the x-axis of the frame of reference.
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takesValue
unitClass
physicalLengthUnits
valueClass
numericClass
Y-position
The position along the y-axis of the frame of reference.
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takesValue
unitClass
physicalLengthUnits
valueClass
numericClass
Z-position
The position along the z-axis of the frame of reference.
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takesValue
unitClass
physicalLengthUnits
valueClass
numericClass
Size
The physical magnitude of something.
Area
The extent of a 2-dimensional surface enclosed within a boundary.
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takesValue
unitClass
areaUnits
valueClass
numericClass
Depth
The distance from the surface of something especially from the perspective of looking from the front.
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takesValue
unitClass
physicalLengthUnits
valueClass
numericClass
Length
The linear extent in space from one end of something to the other end, or the extent of something from beginning to end.
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takesValue
unitClass
physicalLengthUnits
valueClass
numericClass
Width
The extent or measurement of something from side to side.
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takesValue
unitClass
physicalLengthUnits
valueClass
numericClass
Height
The vertical measurement or distance from the base to the top of an object.
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takesValue
unitClass
physicalLengthUnits
valueClass
numericClass
Volume
The amount of three dimensional space occupied by an object or the capacity of a space or container.
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takesValue
unitClass
volumeUnits
valueClass
numericClass
Temporal-value
A characteristic of or relating to time or limited by time.
Delay
Time during which some action is awaited.
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takesValue
unitClass
timeUnits
valueClass
numericClass
Duration
The period of time during which something occurs or continues.
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takesValue
unitClass
timeUnits
valueClass
numericClass
Time-interval
The period of time separating two instances, events, or occurrences.
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takesValue
unitClass
timeUnits
valueClass
numericClass
Time-value
A value with units of time. Usually grouped with tags identifying what the value represents.
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takesValue
unitClass
timeUnits
valueClass
numericClass
Data-variability-attribute
An attribute describing how something changes or varies.
Abrupt
Marked by sudden change.
Constant
Continually recurring or continuing without interruption. Not changing in time or space.
Continuous
Uninterrupted in time, sequence, substance, or extent.
relatedTag
Discrete
Discontinuous
Decreasing
Becoming smaller or fewer in size, amount, intensity, or degree.
relatedTag
Increasing
Deterministic
No randomness is involved in the development of the future states of the element.
relatedTag
Random
Stochastic
Discontinuous
Having a gap in time, sequence, substance, or extent.
relatedTag
Continuous
Discrete
Constituting a separate entities or parts.
relatedTag
Continuous
Discontinuous
Flickering
Moving irregularly or unsteadily or burning or shining fitfully or with a fluctuating light.
Estimated-value
Something that has been calculated or measured approximately.
Exact-value
A value that is viewed to the true value according to some standard.
Fractal
Having extremely irregular curves or shapes for which any suitably chosen part is similar in shape to a given larger or smaller part when magnified or reduced to the same size.
Increasing
Becoming greater in size, amount, or degree.
relatedTag
Decreasing
Random
Governed by or depending on chance. Lacking any definite plan or order or purpose.
relatedTag
Deterministic
Stochastic
Repetitive
A recurring action that is often non-purposeful.
Stochastic
Uses a random probability distribution or pattern that may be analysed statistically but may not be predicted precisely to determine future states.
relatedTag
Deterministic
Random
Varying
Differing in size, amount, degree, or nature.
Environmental-property
Relating to or arising from the surroundings of an agent.
Indoors
Located inside a building or enclosure.
Outdoors
Any area outside a building or shelter.
Real-world
Located in a place that exists in real space and time under realistic conditions.
Virtual-world
Using technology that creates immersive, computer-generated experiences that a person can interact with and navigate through. The digital content is generally delivered to the user through some type of headset and responds to changes in head position or through interaction with other types of sensors. Existing in a virtual setting such as a simulation or game environment.
Augmented-reality
Using technology that enhances real-world experiences with computer-derived digital overlays to change some aspects of perception of the natural environment. The digital content is shown to the user through a smart device or glasses and responds to changes in the environment.
Motion-platform
A mechanism that creates the feelings of being in a real motion environment.
Urban
Relating to, located in, or characteristic of a city or densely populated area.
Rural
Of or pertaining to the country as opposed to the city.
Terrain
Characterization of the physical features of a tract of land.
Composite-terrain
Tracts of land characterized by a mixure of physical features.
Dirt-terrain
Tracts of land characterized by a soil surface and lack of vegetation.
Grassy-terrain
Tracts of land covered by grass.
Gravel-terrain
Tracts of land covered by a surface consisting a loose aggregation of small water-worn or pounded stones.
Leaf-covered-terrain
Tracts of land covered by leaves and composited organic material.
Muddy-terrain
Tracts of land covered by a liquid or semi-liquid mixture of water and some combination of soil, silt, and clay.
Paved-terrain
Tracts of land covered with concrete, asphalt, stones, or bricks.
Rocky-terrain
Tracts of land consisting or full of rock or rocks.
Sloped-terrain
Tracts of land arranged in a sloping or inclined position.
Uneven-terrain
Tracts of land that are not level, smooth, or regular.
Informational-property
Something that pertains to a task.
extensionAllowed
Description
An explanation of what the tag group it is in means. If the description is at the top-level of an event string, the description applies to the event.
requireChild
#
takesValue
valueClass
textClass
ID
An alphanumeric name that identifies either a unique object or a unique class of objects. Here the object or class may be an idea, physical countable object (or class), or physical uncountable substance (or class).
requireChild
#
takesValue
valueClass
textClass
Label
A string of 20 or fewer characters identifying something. Labels usually refer to general classes of things while IDs refer to specific instances. A term that is associated with some entity. A brief description given for purposes of identification. An identifying or descriptive marker that is attached to an object.
requireChild
#
takesValue
valueClass
nameClass
Metadata
Data about data. Information that describes another set of data.
CogAtlas
The Cognitive Atlas ID number of something.
#
takesValue
CogPo
The CogPO ID number of something.
#
takesValue
Creation-date
The date on which data creation of this element began.
requireChild
#
takesValue
valueClass
dateTimeClass
Experimental-note
A brief written record about the experiment.
#
takesValue
valueClass
textClass
Library-name
Official name of a HED library.
#
takesValue
valueClass
nameClass
OBO-identifier
The identifier of a term in some Open Biology Ontology (OBO) ontology.
#
takesValue
valueClass
nameClass
Pathname
The specification of a node (file or directory) in a hierarchical file system, usually specified by listing the nodes top-down.
#
takesValue
Subject-identifier
A sequence of characters used to identify, name, or characterize a trial or study subject.
#
takesValue
Version-identifier
An alphanumeric character string that identifies a form or variant of a type or original.
#
Usually is a semantic version.
takesValue
Parameter
Something user-defined for this experiment.
Parameter-label
The name of the parameter.
#
takesValue
valueClass
labelClass
Parameter-value
The value of the parameter.
#
takesValue
valueClass
textClass
Organizational-property
Relating to an organization or the action of organizing something.
Collection
A tag designating a grouping of items such as in a set or list.
#
Name of the collection.
takesValue
valueClass
nameClass
Condition-variable
An aspect of the experiment or task that is to be varied during the experiment. Task-conditions are sometimes called independent variables or contrasts.
#
Name of the condition variable.
takesValue
valueClass
nameClass
Control-variable
An aspect of the experiment that is fixed throughout the study and usually is explicitly controlled.
#
Name of the control variable.
takesValue
valueClass
nameClass
Def
A HED-specific utility tag used with a defined name to represent the tags associated with that definition.
requireChild
#
Name of the definition.
takesValue
valueClass
nameClass
Def-expand
A HED specific utility tag that is grouped with an expanded definition. The child value of the Def-expand is the name of the expanded definition.
requireChild
tagGroup
#
takesValue
valueClass
nameClass
Definition
A HED-specific utility tag whose child value is the name of the concept and the tag group associated with the tag is an English language explanation of a concept.
requireChild
topLevelTagGroup
#
Name of the definition.
takesValue
valueClass
nameClass
Event-context
A special HED tag inserted as part of a top-level tag group to contain information about the interrelated conditions under which the event occurs. The event context includes information about other events that are ongoing when this event happens.
topLevelTagGroup
unique
Event-stream
A special HED tag indicating that this event is a member of an ordered succession of events.
#
Name of the event stream.
takesValue
valueClass
nameClass
Experimental-intertrial
A tag used to indicate a part of the experiment between trials usually where nothing is happening.
#
Optional label for the intertrial block.
takesValue
valueClass
nameClass
Experimental-trial
Designates a run or execution of an activity, for example, one execution of a script. A tag used to indicate a particular organizational part in the experimental design often containing a stimulus-response pair or stimulus-response-feedback triad.
#
Optional label for the trial (often a numerical string).
takesValue
valueClass
nameClass
Indicator-variable
An aspect of the experiment or task that is measured as task conditions are varied during the experiment. Experiment indicators are sometimes called dependent variables.
#
Name of the indicator variable.
takesValue
valueClass
nameClass
Recording
A tag designating the data recording. Recording tags are usually have temporal scope which is the entire recording.
#
Optional label for the recording.
takesValue
valueClass
nameClass
Task
An assigned piece of work, usually with a time allotment. A tag used to indicate a linkage the structured activities performed as part of the experiment.
#
Optional label for the task block.
takesValue
valueClass
nameClass
Time-block
A tag used to indicate a contiguous time block in the experiment during which something is fixed or noted.
#
Optional label for the task block.
takesValue
valueClass
nameClass
Sensory-property
Relating to sensation or the physical senses.
Sensory-attribute
A sensory characteristic associated with another entity.
Auditory-attribute
Pertaining to the sense of hearing.
Loudness
Perceived intensity of a sound.
#
takesValue
valueClass
numericClass
Pitch
A perceptual property that allows the user to order sounds on a frequency scale.
#
takesValue
unitClass
frequencyUnits
valueClass
numericClass
Sound-envelope
Description of how a sound changes over time.
Sound-envelope-attack
The time taken for initial run-up of level from nil to peak usually beginning when the key on a musical instrument is pressed.
#
takesValue
unitClass
timeUnits
valueClass
numericClass
Sound-envelope-decay
The time taken for the subsequent run down from the attack level to the designated sustain level.
#
takesValue
unitClass
timeUnits
valueClass
numericClass
Sound-envelope-release
The time taken for the level to decay from the sustain level to zero after the key is released
#
takesValue
unitClass
timeUnits
valueClass
numericClass
Sound-envelope-sustain
The time taken for the main sequence of the sound duration, until the key is released.
#
takesValue
unitClass
timeUnits
valueClass
numericClass
Timbre
The perceived sound quality of a singing voice or musical instrument.
#
takesValue
valueClass
labelClass
Gustatory-attribute
Pertaining to the sense of taste.
Bitter
Having a sharp, pungent taste.
Salty
Tasting of or like salt.
Savory
Belonging to a taste that is salty or spicy rather than sweet.
Sour
Having a sharp, acidic taste.
Sweet
Having or resembling the taste of sugar.
Olfactory-attribute
Having a smell.
Somatic-attribute
Pertaining to the feelings in the body or of the nervous system.
Pain
The sensation of discomfort, distress, or agony, resulting from the stimulation of specialized nerve endings.
Stress
The negative mental, emotional, and physical reactions that occur when environmental stressors are perceived as exceeding the adaptive capacities of the individual.
Tactile-attribute
Pertaining to the sense of touch.
Tactile-pressure
Having a feeling of heaviness.
Tactile-temperature
Having a feeling of hotness or coldness.
Tactile-texture
Having a feeling of roughness.
Tactile-vibration
Having a feeling of mechanical oscillation.
Vestibular-attribute
Pertaining to the sense of balance or body position.
Visual-attribute
Pertaining to the sense of sight.
Color
The appearance of objects (or light sources) described in terms of perception of their hue and lightness (or brightness) and saturation.
CSS-color
One of 140 colors supported by all browsers. For more details such as the color RGB or HEX values, check: https://www.w3schools.com/colors/colors_groups.asp
Blue-color
CSS color group
CadetBlue
CSS-color 0x5F9EA0
SteelBlue
CSS-color 0x4682B4
LightSteelBlue
CSS-color 0xB0C4DE
LightBlue
CSS-color 0xADD8E6
PowderBlue
CSS-color 0xB0E0E6
LightSkyBlue
CSS-color 0x87CEFA
SkyBlue
CSS-color 0x87CEEB
CornflowerBlue
CSS-color 0x6495ED
DeepSkyBlue
CSS-color 0x00BFFF
DodgerBlue
CSS-color 0x1E90FF
RoyalBlue
CSS-color 0x4169E1
Blue
CSS-color 0x0000FF
MediumBlue
CSS-color 0x0000CD
DarkBlue
CSS-color 0x00008B
Navy
CSS-color 0x000080
MidnightBlue
CSS-color 0x191970
Brown-color
CSS color group
Cornsilk
CSS-color 0xFFF8DC
BlanchedAlmond
CSS-color 0xFFEBCD
Bisque
CSS-color 0xFFE4C4
NavajoWhite
CSS-color 0xFFDEAD
Wheat
CSS-color 0xF5DEB3
BurlyWood
CSS-color 0xDEB887
Tan
CSS-color 0xD2B48C
RosyBrown
CSS-color 0xBC8F8F
SandyBrown
CSS-color 0xF4A460
GoldenRod
CSS-color 0xDAA520
DarkGoldenRod
CSS-color 0xB8860B
Peru
CSS-color 0xCD853F
Chocolate
CSS-color 0xD2691E
Olive
CSS-color 0x808000
SaddleBrown
CSS-color 0x8B4513
Sienna
CSS-color 0xA0522D
Brown
CSS-color 0xA52A2A
Maroon
CSS-color 0x800000
Cyan-color
CSS color group
Aqua
CSS-color 0x00FFFF
Cyan
CSS-color 0x00FFFF
LightCyan
CSS-color 0xE0FFFF
PaleTurquoise
CSS-color 0xAFEEEE
Aquamarine
CSS-color 0x7FFFD4
Turquoise
CSS-color 0x40E0D0
MediumTurquoise
CSS-color 0x48D1CC
DarkTurquoise
CSS-color 0x00CED1
Green-color
CSS color group
GreenYellow
CSS-color 0xADFF2F
Chartreuse
CSS-color 0x7FFF00
LawnGreen
CSS-color 0x7CFC00
Lime
CSS-color 0x00FF00
LimeGreen
CSS-color 0x32CD32
PaleGreen
CSS-color 0x98FB98
LightGreen
CSS-color 0x90EE90
MediumSpringGreen
CSS-color 0x00FA9A
SpringGreen
CSS-color 0x00FF7F
MediumSeaGreen
CSS-color 0x3CB371
SeaGreen
CSS-color 0x2E8B57
ForestGreen
CSS-color 0x228B22
Green
CSS-color 0x008000
DarkGreen
CSS-color 0x006400
YellowGreen
CSS-color 0x9ACD32
OliveDrab
CSS-color 0x6B8E23
DarkOliveGreen
CSS-color 0x556B2F
MediumAquaMarine
CSS-color 0x66CDAA
DarkSeaGreen
CSS-color 0x8FBC8F
LightSeaGreen
CSS-color 0x20B2AA
DarkCyan
CSS-color 0x008B8B
Teal
CSS-color 0x008080
Gray-color
CSS color group
Gainsboro
CSS-color 0xDCDCDC
LightGray
CSS-color 0xD3D3D3
Silver
CSS-color 0xC0C0C0
DarkGray
CSS-color 0xA9A9A9
DimGray
CSS-color 0x696969
Gray
CSS-color 0x808080
LightSlateGray
CSS-color 0x778899
SlateGray
CSS-color 0x708090
DarkSlateGray
CSS-color 0x2F4F4F
Black
CSS-color 0x000000
Orange-color
CSS color group
Orange
CSS-color 0xFFA500
DarkOrange
CSS-color 0xFF8C00
Coral
CSS-color 0xFF7F50
Tomato
CSS-color 0xFF6347
OrangeRed
CSS-color 0xFF4500
Pink-color
CSS color group
Pink
CSS-color 0xFFC0CB
LightPink
CSS-color 0xFFB6C1
HotPink
CSS-color 0xFF69B4
DeepPink
CSS-color 0xFF1493
PaleVioletRed
CSS-color 0xDB7093
MediumVioletRed
CSS-color 0xC71585
Purple-color
CSS color group
Lavender
CSS-color 0xE6E6FA
Thistle
CSS-color 0xD8BFD8
Plum
CSS-color 0xDDA0DD
Orchid
CSS-color 0xDA70D6
Violet
CSS-color 0xEE82EE
Fuchsia
CSS-color 0xFF00FF
Magenta
CSS-color 0xFF00FF
MediumOrchid
CSS-color 0xBA55D3
DarkOrchid
CSS-color 0x9932CC
DarkViolet
CSS-color 0x9400D3
BlueViolet
CSS-color 0x8A2BE2
DarkMagenta
CSS-color 0x8B008B
Purple
CSS-color 0x800080
MediumPurple
CSS-color 0x9370DB
MediumSlateBlue
CSS-color 0x7B68EE
SlateBlue
CSS-color 0x6A5ACD
DarkSlateBlue
CSS-color 0x483D8B
RebeccaPurple
CSS-color 0x663399
Indigo
CSS-color 0x4B0082
Red-color
CSS color group
LightSalmon
CSS-color 0xFFA07A
Salmon
CSS-color 0xFA8072
DarkSalmon
CSS-color 0xE9967A
LightCoral
CSS-color 0xF08080
IndianRed
CSS-color 0xCD5C5C
Crimson
CSS-color 0xDC143C
Red
CSS-color 0xFF0000
FireBrick
CSS-color 0xB22222
DarkRed
CSS-color 0x8B0000
Yellow-color
CSS color group
Gold
CSS-color 0xFFD700
Yellow
CSS-color 0xFFFF00
LightYellow
CSS-color 0xFFFFE0
LemonChiffon
CSS-color 0xFFFACD
LightGoldenRodYellow
CSS-color 0xFAFAD2
PapayaWhip
CSS-color 0xFFEFD5
Moccasin
CSS-color 0xFFE4B5
PeachPuff
CSS-color 0xFFDAB9
PaleGoldenRod
CSS-color 0xEEE8AA
Khaki
CSS-color 0xF0E68C
DarkKhaki
CSS-color 0xBDB76B
White-color
CSS color group
White
CSS-color 0xFFFFFF
Snow
CSS-color 0xFFFAFA
HoneyDew
CSS-color 0xF0FFF0
MintCream
CSS-color 0xF5FFFA
Azure
CSS-color 0xF0FFFF
AliceBlue
CSS-color 0xF0F8FF
GhostWhite
CSS-color 0xF8F8FF
WhiteSmoke
CSS-color 0xF5F5F5
SeaShell
CSS-color 0xFFF5EE
Beige
CSS-color 0xF5F5DC
OldLace
CSS-color 0xFDF5E6
FloralWhite
CSS-color 0xFFFAF0
Ivory
CSS-color 0xFFFFF0
AntiqueWhite
CSS-color 0xFAEBD7
Linen
CSS-color 0xFAF0E6
LavenderBlush
CSS-color 0xFFF0F5
MistyRose
CSS-color 0xFFE4E1
Color-shade
A slight degree of difference between colors, especially with regard to how light or dark it is or as distinguished from one nearly like it.
Dark-shade
A color tone not reflecting much light.
Light-shade
A color tone reflecting more light.
Grayscale
Using a color map composed of shades of gray, varying from black at the weakest intensity to white at the strongest.
#
White intensity between 0 and 1
takesValue
valueClass
numericClass
HSV-color
A color representation that models how colors appear under light.
Hue
Attribute of a visual sensation according to which an area appears to be similar to one of the perceived colors.
#
Angular value between 0 and 360
takesValue
valueClass
numericClass
Saturation
Colorfulness of a stimulus relative to its own brightness.
#
B value of RGB between 0 and 1
takesValue
valueClass
numericClass
HSV-value
AAttribute of a visual sensation according to which an area appears to emit more or less light.
#
takesValue
valueClass
numericClass
RGB-color
A color from the RGB schema.
RGB-red
The red component.
#
R value of RGB between 0 and 1
takesValue
valueClass
numericClass
RGB-blue
The blue component.
#
B value of RGB between 0 and 1
takesValue
valueClass
numericClass
RGB-green
The green component.
#
G value of RGB between 0 and 1
takesValue
valueClass
numericClass
Luminance
A quality that exists by virtue of the luminous intensity per unit area projected in a given direction.
Opacity
A measure of impenetrability to light.
Sensory-presentation
The entity has a sensory manifestation.
Auditory-presentation
The sense of hearing is used in the presentation to the user.
Loudspeaker-separation
The distance between two loudspeakers. Grouped with the Distance tag.
suggestedTag
Distance
Monophonic
Relating to sound transmission, recording, or reproduction involving a single transmission path.
Silent
The absence of ambient audible sound or the state of having ceased to produce sounds.
Stereophonic
Relating to, or constituting sound reproduction involving the use of separated microphones and two transmission channels to achieve the sound separation of a live hearing.
Gustatory-presentation
The sense of taste used in the presentation to the user.
Olfactory-presentation
The sense of smell used in the presentation to the user.
Somatic-presentation
The nervous system is used in the presentation to the user.
Tactile-presentation
The sense of touch used in the presentation to the user.
Vestibular-presentation
The sense balance used in the presentation to the user.
Visual-presentation
The sense of sight used in the presentation to the user.
2D-view
A view showing only two dimensions.
3D-view
A view showing three dimensions.
Background-view
Parts of the view that are farthest from the viewer and usually the not part of the visual focus.
Bistable-view
Something having two stable visual forms that have two distinguishable stable forms as in optical illusions.
Foreground-view
Parts of the view that are closest to the viewer and usually the most important part of the visual focus.
Foveal-view
Visual presentation directly on the fovea. A view projected on the small depression in the retina containing only cones and where vision is most acute.
Map-view
A diagrammatic representation of an area of land or sea showing physical features, cities, roads.
Aerial-view
Elevated view of an object from above, with a perspective as though the observer were a bird.
Satellite-view
A representation as captured by technology such as a satellite.
Street-view
A 360-degrees panoramic view from a position on the ground.
Peripheral-view
Indirect vision as it occurs outside the point of fixation.
Task-property
Something that pertains to a task.
extensionAllowed
Task-attentional-demand
Strategy for allocating attention toward goal-relevant information.
Bottom-up-attention
Attentional guidance purely by externally driven factors to stimuli that are salient because of their inherent properties relative to the background. Sometimes this is referred to as stimulus driven.
relatedTag
Top-down-attention
Covert-attention
Paying attention without moving the eyes.
relatedTag
Overt-attention
Divided-attention
Integrating parallel multiple stimuli. Behavior involving responding simultaneously to multiple tasks or multiple task demands.
relatedTag
Focused-attention
Focused-attention
Responding discretely to specific visual, auditory, or tactile stimuli.
relatedTag
Divided-attention
Orienting-attention
Directing attention to a target stimulus.
Overt-attention
Selectively processing one location over others by moving the eyes to point at that location.
relatedTag
Covert-attention
Selective-attention
Maintaining a behavioral or cognitive set in the face of distracting or competing stimuli. Ability to pay attention to a limited array of all available sensory information.
Sustained-attention
Maintaining a consistent behavioral response during continuous and repetitive activity.
Switched-attention
Having to switch attention between two or more modalities of presentation.
Top-down-attention
Voluntary allocation of attention to certain features. Sometimes this is referred to goal-oriented attention.
relatedTag
Bottom-up-attention
Task-effect-evidence
The evidence supporting the conclusion that the event had the specified effect.
Computational-evidence
A type of evidence in which data are produced, and/or generated, and/or analyzed on a computer.
External-evidence
A phenomenon that follows and is caused by some previous phenomenon.
Intended-effect
A phenomenon that is intended to follow and be caused by some previous phenomenon.
Behavioral-evidence
An indication or conclusion based on the behavior of an agent.
Task-event-role
The purpose of an event with respect to the task.
Experimental-stimulus
Part of something designed to elicit a response in the experiment.
Incidental
Usually associated with a sensory event intended to give instructions to the participant about the task or behavior.
Instructional
Usually associated with a sensory event intended to give instructions to the participant about the task or behavior.
Mishap
Unplanned disruption such as an equipment or experiment control abnormality or experimenter error.
Participant-response
Something related to a participant actions in performing the task.
Task-activity
Something that is part of the overall task or is necessary to the overall experiment but is not directly part of a stimulus-response cycle. Examples would be taking a survey or provided providing a silva sample.
Warning
Something that should warn the participant that the parameters of the task have been or are about to be exceeded such as a warning message about getting too close to the shoulder of the road in a driving task.
Task-action-type
How an agent action should be interpreted in terms of the task specification.
Appropriate-action
An action suitable or proper in the circumstances.
relatedTag
Inappropriate-action
Correct-action
An action that was a correct response in the context of the task.
relatedTag
Incorrect-action
Indeterminate-action
Correction
An action offering an improvement to replace a mistake or error.
Incorrect-action
An action considered wrong or incorrect in the context of the task.
relatedTag
Correct-action
Indeterminate-action
Imagined-action
Form a mental image or concept of something. This is used to identity something that only happened in the imagination of the participant as in imagined movements in motor imagery paradigms.
Inappropriate-action
An action not in keeping with what is correct or proper for the task.
relatedTag
Appropriate-action
Indeterminate-action
An action that cannot be distinguished between two or more possibibities in the current context. This tag might be applied when an outside evaluator or a classification algorithm cannot determine a definitive result.
relatedTag
Correct-action
Incorrect-action
Miss
Near-miss
Omitted-action
An expected response was skipped.
Miss
An action considered to be a failure in the context of the task. For example, if the agent is supposed to try to hit a target and misses.
relatedTag
Near-miss
Near-miss
An action barely satisfied the requirements of the task. In a driving experiment for example this could pertain to a narrowly avoided collision or other accident.
relatedTag
Miss
Task-relationship
Specifying organizational importance of sub-tasks.
Background-subtask
A part of the task which should be performed in the background as for example inhibiting blinks due to instruction while performing the primary task.
Primary-subtask
A part of the task which should be the primary focus of the participant.
Task-stimulus-role
The role the stimulus plays in the task.
Cue
A signal for an action, a pattern of stimuli indicating a particular response.
Distractor
A person or thing that distracts or a plausible but incorrect option in a multiple-choice question. In pyschological studies this is sometimes referred to as a foil.
Expected
Considered likely, probable or anticipated. Something of low information value as in frequent non-targets in an RSVP paradigm.
relatedTag
Unexpected
suggestedTag
Target
Extraneous
Irrelevant or unrelated to the subject being dealt with.
Feedback
An evaluative response to an inquiry, process, event, or activity.
Go-signal
An indicator to proceed with a planned action.
relatedTag
Stop-signal
Meaningful
Conveying significant or relevant information.
Newly-learned
Representing recently acquired information or understanding.
Non-informative
Something that is not useful in forming an opinion or judging an outcome.
Non-target
Something other than that done or looked for. Also tag Expected if the Non-target is frequent.
relatedTag
Target
Not-meaningful
Not having a serious, important, or useful quality or purpose.
Novel
Having no previous example or precedent or parallel.
Oddball
Something unusual, or infrequent.
relatedTag
Unexpected
suggestedTag
Target
Planned
Something that was decided on or arranged in advance.
relatedTag
Unplanned
Penalty
A disadvantage, loss, or hardship due to some action.
Priming
An implicit memory effect in which exposure to a stimulus influences response to a later stimulus.
Query
A sentence of inquiry that asks for a reply.
Reward
A positive reinforcement for a desired action, behavior or response.
Stop-signal
An indicator that the agent should stop the current activity.
relatedTag
Go-signal
Target
Something fixed as a goal, destination, or point of examination.
Threat
An indicator that signifies hostility and predicts an increased probability of attack.
Timed
Something planned or scheduled to be done at a particular time or lasting for a specified amount of time.
Unexpected
Something that is not anticipated.
relatedTag
Expected
Unplanned
Something that has not been planned as part of the task.
relatedTag
Planned
Relation
Concerns the way in which two or more people or things are connected.
Comparative-relation
Something considered in comparison to something else.
Approximately-equal-to
(A (Approximately-equal-to B)) indicates that A and B have almost the same value. Here A and B could refer to sizes, orders, positions or other quantities.
Less-than
(A (Less-than B)) indicates that A is smaller than B. Here A and B could refer to sizes, orders, positions or other quantities.
Less-than-or-equal-to
(A (Less-than-or-equal-to B)) indicates that the relative size or order of A is smaller than or equal to B.
Greater-than
(A (Greater-than B)) indicates that the relative size or order of A is bigger than that of B.
Greater-than-or-equal-to
(A (Greater-than-or-equal-to B)) indicates that the relative size or order of A is bigger than or the same as that of B.
Equal-to
(A (Equal-to B)) indicates that the size or order of A is the same as that of B.
Not-equal-to
(A (Not-equal-to B)) indicates that the size or order of A is not the same as that of B.
Connective-relation
Indicates two items are related in some way.
Belongs-to
(A (Belongs-to B)) indicates that A is a member of B.
Connected-to
(A (Connected-to) B) indicates that A is related to B in some respect, usually through a direct link.
Contained-in
(A (Contained-in B)) indicates that A is completely inside of B.
Described-by
(A (Described-by B)) indicates that B provides information about A.
From-to
(A (From-to B)) indicates a directional relation from A to B. A is considered the source.
Group-of
(A (Group-of B)) indicates A is a group of items of type B.
Implied-by
(A (Implied-by B)) indicates B is suggested by A.
Interacts-with
(A (Interacts-with B)) indicates A and B interact, possibly reciprocally.
Member-of
(A (Member-of B)) indicates A is a member of group B.
Part-of
(A (Part-of B)) indicates A is a part of the whole B.
Performed-by
(A (Performed-by B)) Indicates that ction or procedure A was carried out by agent B.
Related-to
(A (Relative-to B)) indicates A is a part of the whole B.
Directional-relation
A relationship indicating direction of change.
Away-from
Go away from a place or object.
Towards
Moving in the direction of. A relation binding a relational quality or disposition to the relevant type of entity
Spatial-relation
Indicating information about position.
Above
(A (Adjacent-to B)) means A is in a place or position that is higher than B.
Across-from
(A (Across-from B)) means A is on the opposite side of something from B.
Adjacent-to
(A (Adjacent-to B)) indicates that A is next to B in time or space.
Ahead-of
(A (Ahead-of B)) indicates that A is further forward in time or space in B.
Around
(A (Around B)) means A is in or near the present place or situation of B.
Behind
(A (Behind B)) means A is at or to the far side of B, typically so as to be hidden by it.
Below
(A (Below B)) means A is in a place or position that is lower than the position of B.
Between
(A (Between, (B, C))) means A is in the space or interval separating B and C.
Bilateral-to
(A (Bilateral B)) means A is on both sides of B or affects both sides of B.
Bottom-edge-of
(A (Bottom-edge-of B)) means A is on the bottom most part or or near the boundary of B.
relatedTag
Left-edge-of
Right-edge-of
Top-edge-of
Boundary-of
(A (Boundary-of B)) means A is on or part of the edge or boundary of B.
Center-of
(A (Center-of B)) means A is at a point or or in an area that is approximately central within B.
Close-to
(A (Close-to B)) means A is at a small distance from or is located near in space to B.
Far-from
(A (Far-from B)) means A is at a large distance from or is not located near in space to B.
In-front-of
(A (In-front-of B)) means A is in a position just ahead or at the front part of B, potentially partially blocking B from view.
Left-edge-of
(A (Left-edge-of B)) means A is located on the left side of B on or near the boundary of B.
relatedTag
Bottom-edge-of
Right-edge-of
Top-edge-of
Left-side-of
(A (Left-side-of B)) means A is located on the left side of B usually as part of B.
relatedTag
Right-side-of
Lower-left-of
(A (Lower-left-of B)) means A is situated on the lower left part of B. This relation is often used to specify qualitative information about screen position.
relatedTag
Lower-right-of
Lower-right-of
(A (Lower-right-of B)) means A is situated on the lower right part of B. This relation is often used to specify qualitative information about screen position.
relatedTag
Upper-left-of
Outside-of
(A (Outside-of B)) means A is located in the space around but not including B.
Over
(A (over B)) means A above is above B so as to cover or protect or A extends over the a general area as from a from a vantage point.
Right-edge-of
(A (Right-edge-of B)) means A is located on the right side of B on or near the boundary of B.
relatedTag
Bottom-edge-of
Left-edge-of
Top-edge-of
Right-side-of
(A (Right-side-of B)) means A is located on the right side of B usually as part of B.
relatedTag
Left-side-of
To-left-of
(A (To-left-of B)) means A is located on or directed toward the side to the west of B when B is facing north. This term is used when A is not part of B.
To-right-of
(A (To-right-of B)) means A is located on or directed toward the side to the east of B when B is facing north. This term is used when A is not part of B.
Top-edge-of
(A (Top-edge-of B)) means A is on the uppermost part or or near the boundary of B.
relatedTag
Left-edge-of
Right-edge-of
Bottom-edge-of
Top-of
(A (Top-of B)) means A is on the uppermost part, side, or surface of B.
Underneath
(A (Underneath B)) means A is situated directly below and may be concealed by B.
Upper-left-of
(A (Upper-left-of B)) means A is situated on the upper left part of B. This relation is often used to specify qualitative information about screen position.
relatedTag
Lower-left-of
Upper-right-of
(A (Upper-right-of B)) means A is situated on the upper right part of B. This relation is often used to specify qualitative information about screen position.
relatedTag
Lower-left-of
Within
(A (Within B)) means A is on the inside of or contained in B.
Temporal-relation
Any relationship which includes a temporal or time-based component.
After
(A After B) means A happens at a time subsequent to a reference time related to B.
Asynchronous-with
(A Asynchronous-with B) means A happens at times not occurring at the same time or having the same period or phase as B.
Before
(A Before B) means A happens at a time earlier in time or order than B.
During
(A During B) means A happens at some point in a given period of time in which B is ongoing.
Synchronous-with
(A Synchronous-with B) means A happens at occurs at the same time or rate as B.
Waiting-for
(A Waiting-for B) means A pauses for something to happen in B.
accelerationUnits
defaultUnits
m-per-s^2
m-per-s^2
SIUnit
unitSymbol
angleUnits
defaultUnits
radian
radian
SIUnit
rad
SIUnit
unitSymbol
degree
areaUnits
defaultUnits
m^2
m^2
SIUnit
unitSymbol
currencyUnits
Units indicating the worth of something.
defaultUnits
$
dollar
$
unitPrefix
unitSymbol
point
frequencyUnits
defaultUnits
Hz
hertz
SIUnit
Hz
SIUnit
unitSymbol
intensityUnits
defaultUnits
dB
dB
Intensity expressed as ratio to a threshold. Often used for sound intensity.
unitSymbol
candela
Units used to express light intensity.
SIUnit
cd
Units used to express light intensity.
SIUnit
unitSymbol
jerkUnits
defaultUnits
m-per-s^3
m-per-s^3
unitSymbol
memorySizeUnits
defaultUnits
B
byte
SIUnit
B
SIUnit
unitSymbol
physicalLengthUnits
defaultUnits
m
foot
inch
metre
SIUnit
m
SIUnit
unitSymbol
mile
speedUnits
defaultUnits
m-per-s
m-per-s
SIUnit
unitSymbol
mph
unitSymbol
kph
unitSymbol
timeUnits
defaultUnits
s
second
SIUnit
s
SIUnit
unitSymbol
day
minute
hour
Should be in 24-hour format.
volumeUnits
defaultUnits
m^3
m^3
SIUnit
unitSymbol
weightUnits
defaultUnits
g
g
SIUnit
unitSymbol
gram
SIUnit
pound
lb
deca
SI unit multiple representing 10^1
SIUnitModifier
da
SI unit multiple representing 10^1
SIUnitSymbolModifier
hecto
SI unit multiple representing 10^2
SIUnitModifier
h
SI unit multiple representing 10^2
SIUnitSymbolModifier
kilo
SI unit multiple representing 10^3
SIUnitModifier
k
SI unit multiple representing 10^3
SIUnitSymbolModifier
mega
SI unit multiple representing 10^6
SIUnitModifier
M
SI unit multiple representing 10^6
SIUnitSymbolModifier
giga
SI unit multiple representing 10^9
SIUnitModifier
G
SI unit multiple representing 10^9
SIUnitSymbolModifier
tera
SI unit multiple representing 10^12
SIUnitModifier
T
SI unit multiple representing 10^12
SIUnitSymbolModifier
peta
SI unit multiple representing 10^15
SIUnitModifier
P
SI unit multiple representing 10^15
SIUnitSymbolModifier
exa
SI unit multiple representing 10^18
SIUnitModifier
E
SI unit multiple representing 10^18
SIUnitSymbolModifier
zetta
SI unit multiple representing 10^21
SIUnitModifier
Z
SI unit multiple representing 10^21
SIUnitSymbolModifier
yotta
SI unit multiple representing 10^24
SIUnitModifier
Y
SI unit multiple representing 10^24
SIUnitSymbolModifier
deci
SI unit submultiple representing 10^-1
SIUnitModifier
d
SI unit submultiple representing 10^-1
SIUnitSymbolModifier
centi
SI unit submultiple representing 10^-2
SIUnitModifier
c
SI unit submultiple representing 10^-2
SIUnitSymbolModifier
milli
SI unit submultiple representing 10^-3
SIUnitModifier
m
SI unit submultiple representing 10^-3
SIUnitSymbolModifier
micro
SI unit submultiple representing 10^-6
SIUnitModifier
u
SI unit submultiple representing 10^-6
SIUnitSymbolModifier
nano
SI unit submultiple representing 10^-9
SIUnitModifier
n
SI unit submultiple representing 10^-9
SIUnitSymbolModifier
pico
SI unit submultiple representing 10^-12
SIUnitModifier
p
SI unit submultiple representing 10^-12
SIUnitSymbolModifier
femto
SI unit submultiple representing 10^-15
SIUnitModifier
f
SI unit submultiple representing 10^-15
SIUnitSymbolModifier
atto
SI unit submultiple representing 10^-18
SIUnitModifier
a
SI unit submultiple representing 10^-18
SIUnitSymbolModifier
zepto
SI unit submultiple representing 10^-21
SIUnitModifier
z
SI unit submultiple representing 10^-21
SIUnitSymbolModifier
yocto
SI unit submultiple representing 10^-24
SIUnitModifier
y
SI unit submultiple representing 10^-24
SIUnitSymbolModifier
dateTimeClass
Date-times should conform to ISO8601 date-time format YYYY-MM-DDThh:mm:ss. Any variation on the full form is allowed.
allowedCharacter
digits
T
-
:
nameClass
Value class designating values that have the characteristics of node names. The allowed characters are alphanumeric, hyphen, and underbar.
allowedCharacter
letters
digits
_
-
numericClass
Value must be a valid numerical value.
allowedCharacter
digits
E
e
+
-
.
posixPath
Posix path specification.
allowedCharacter
digits
letters
/
:
textClass
Value class designating values that have the characteristics of text such as in descriptions.
allowedCharacter
letters
digits
blank
+
-
:
;
.
/
(
)
?
*
%
$
@
allowedCharacter
A schema attribute of value classes specifying a special character that is allowed in expressing the value of a placeholder. Normally the allowed characters are listed individually. However, the word letters designates the upper and lower case alphabetic characters and the word digits designates the digits 0-9. The word blank designates the blank character.
valueClassProperty
defaultUnits
A schema attribute of unit classes specifying the default units to use if the placeholder has a unit class but the substituted value has no units.
unitClassProperty
extensionAllowed
A schema attribute indicating that users can add unlimited levels of child nodes under this tag. This tag is propagated to child nodes with the exception of the hashtag placeholders.
boolProperty
recommended
A schema attribute indicating that the event-level HED string should include this tag.
boolProperty
relatedTag
A schema attribute suggesting HED tags that are closely related to this tag. This attribute is used by tagging tools.
requireChild
A schema attribute indicating that one of the node elements descendants must be included when using this tag.
boolProperty
required
A schema attribute indicating that every event-level HED string should include this tag.
boolProperty
SIUnit
A schema attribute indicating that this unit element is an SI unit and can be modified by multiple and submultiple names. Note that some units such as byte are designated as SI units although they are not part of the standard.
boolProperty
unitProperty
SIUnitModifier
A schema attribute indicating that this SI unit modifier represents a multiple or submultiple of a base unit rather than a unit symbol.
boolProperty
unitModifierProperty
SIUnitSymbolModifier
A schema attribute indicating that this SI unit modifier represents a multiple or submultiple of a unit symbol rather than a base symbol.
boolProperty
unitModifierProperty
suggestedTag
A schema attribute that indicates another tag that is often associated with this tag. This attribute is used by tagging tools to provide tagging suggestions.
tagGroup
A schema attribute indicating the tag can only appear inside a tag group.
boolProperty
takesValue
A schema attribute indicating the tag is a hashtag placeholder that is expected to be replaced with a user-defined value.
boolProperty
topLevelTagGroup
A schema attribute indicating that this tag (or its descendants) can only appear in a top-level tag group.
boolProperty
unique
A schema attribute indicating that only one of this tag or its descendants can be used in the event-level HED string.
boolProperty
unitClass
A schema attribute specifying which unit class this value tag belongs to.
unitPrefix
A schema attribute applied specifically to unit elements to designate that the unit indicator is a prefix (e.g., dollar sign in the currency units).
boolProperty
unitProperty
unitSymbol
A schema attribute indicating this tag is an abbreviation or symbol representing a type of unit. Unit symbols represent both the singular and the plural and thus cannot be pluralized.
boolProperty
unitProperty
valueClass
A schema attribute specifying which value class this value tag belongs to.
boolProperty
Indicates that the schema attribute represents something that is either true or false and does not have a value. Attributes without this value are assumed to have string values.
unitClassProperty
Indicates that the schema attribute is meant to be applied to unit classes.
unitModifierProperty
Indicates that the schema attribute is meant to be applied to unit modifier classes.
unitProperty
Indicates that the schema attribute is meant to be applied to units within a unit class.
valueClassProperty
Indicates that the schema attribute is meant to be applied to value classes.
This is an updated version of the schema format. The properties are now part of the schema. The schema attributes are designed to be checked in software rather than hard-coded. The schema attributes, themselves have properties.