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# Multi-day MI-BCI dataset (WBCIC-SHU) from Yang et al 2025

Multi-day MI-BCI dataset (WBCIC-SHU) from Yang et al 2025.

## Dataset Overview

- **Code**: Yang2025
- **Paradigm**: imagery
- **DOI**: 10.1038/s41597-025-04826-y
- **Subjects**: 51
- **Sessions per subject**: 3
- **Events**: left_hand=1, right_hand=2
- **Trial interval**: [1.5, 5.5] s
- **File format**: BDF

## Acquisition

- **Sampling rate**: 1000.0 Hz
- **Number of channels**: 59
- **Channel types**: eeg=59, ecg=1, eog=4
- **Channel names**: Fpz, Fp1, Fp2, AF3, AF4, AF7, AF8, Fz, F1, F2, F3, F4, F5, F6, F7, F8, FCz, FC1, FC2, FC3, FC4, FC5, FC6, FT7, FT8, Cz, C1, C2, C3, C4, C5, C6, T7, T8, CP1, CP2, CP3, CP4, CP5, CP6, TP7, TP8, Pz, P3, P4, P5, P6, P7, P8, POz, PO3, PO4, PO5, PO6, PO7, PO8, Oz, O1, O2
- **Montage**: standard_1005
- **Hardware**: Neuracle NeuSen W
- **Sensor type**: Ag/AgCl
- **Line frequency**: 50.0 Hz
- **Online filters**: {}

## Participants

- **Number of subjects**: 51
- **Health status**: healthy
- **Age**: min=17.0, max=30.0
- **Gender distribution**: female=18, male=44
- **Handedness**: right-handed
- **BCI experience**: naive
- **Species**: human

## Experimental Protocol

- **Paradigm**: imagery
- **Number of classes**: 2
- **Class labels**: left_hand, right_hand
- **Trial duration**: 7.5 s
- **Study design**: Multi-day MI-BCI: 2C (left/right hand, 51 subj) and 3C (left hand, right hand, foot-hooking, 11 subj). 3 sessions per subject on different days.
- **Feedback type**: none
- **Stimulus type**: video cues
- **Stimulus modalities**: visual, auditory
- **Primary modality**: visual
- **Synchronicity**: synchronous
- **Mode**: offline

## HED Event Annotations

Schema: HED 8.4.0 | Browse: https://www.hedtags.org/hed-schema-browser

```
  left_hand
    ├─ Sensory-event, Experimental-stimulus, Visual-presentation
    └─ Agent-action
       └─ Imagine
          ├─ Move
          └─ Left, Hand

  right_hand
    ├─ Sensory-event, Experimental-stimulus, Visual-presentation
    └─ Agent-action
       └─ Imagine
          ├─ Move
          └─ Right, Hand

```
## Paradigm-Specific Parameters

- **Detected paradigm**: motor_imagery
- **Imagery tasks**: left_hand, right_hand, feet
- **Cue duration**: 1.5 s
- **Imagery duration**: 4.0 s

## Data Structure

- **Trials**: 39600
- **Trials context**: 51 subjects x 3 sessions x 200 trials (2C) + 11 subjects x 3 sessions x 300 trials (3C) = 39600

## Signal Processing

- **Classifiers**: CSP+SVM, FBCSP+SVM, EEGNet, deepConvNet, FBCNet
- **Feature extraction**: CSP, FBCSP
- **Frequency bands**: bandpass=[0.5, 40.0] Hz
- **Spatial filters**: CSP, FBCSP

## Cross-Validation

- **Method**: 10-fold
- **Folds**: 10
- **Evaluation type**: within_session

## BCI Application

- **Applications**: motor_control
- **Environment**: laboratory
- **Online feedback**: False

## Tags

- **Pathology**: Healthy
- **Modality**: Motor
- **Type**: Research

## Documentation

- **DOI**: 10.1038/s41597-025-04826-y
- **License**: CC-BY-4.0
- **Investigators**: Banghua Yang, Fenqi Rong, Yunlong Xie, Du Li, Jiayang Zhang, Fu Li, Guangming Shi, Xiaorong Gao
- **Institution**: Shanghai University
- **Country**: CN
- **Data URL**: https://plus.figshare.com/articles/dataset/22671172
- **Publication year**: 2025

## References

Yang, B., Rong, F., Xie, Y., et al. (2025). A multi-day and high-quality EEG dataset for motor imagery brain-computer interface. Scientific Data, 12, 488. https://doi.org/10.1038/s41597-025-04826-y
Appelhoff, S., Sanderson, M., Brooks, T., Vliet, M., Quentin, R., Holdgraf, C., Chaumon, M., Mikulan, E., Tavabi, K., Hochenberger, R., Welke, D., Brunner, C., Rockhill, A., Larson, E., Gramfort, A. and Jas, M. (2019). MNE-BIDS: Organizing electrophysiological data into the BIDS format and facilitating their analysis. Journal of Open Source Software 4: (1896). https://doi.org/10.21105/joss.01896

Pernet, C. R., Appelhoff, S., Gorgolewski, K. J., Flandin, G., Phillips, C., Delorme, A., Oostenveld, R. (2019). EEG-BIDS, an extension to the brain imaging data structure for electroencephalography. Scientific Data, 6, 103. https://doi.org/10.1038/s41597-019-0104-8

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