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Description of channel types and information of three modalities.
| Modality | The number of channels | Description |
|---|---|---|
| Scalp-EEG | 36 | 32 EEG channels and 4 EOG channels |
| Ear-EEG | 14 | 8 channels on the left side and 6 channels on the right side |
| IMU | 27 | 3 devices (head, left ankle, and right ankle) |
| 9-axis device containing accelerometers, gyroscopes, and magnetometers |
