Table A1.
EEG details for BCI-FES setup and neurological assessments, recorded using GTec gUSBAmp Bio Amplifier.
| Setup | BCI-FES | 64 channel EEG |
|---|---|---|
| Electrodes | Bipolar FC3-CP3 (C3) FC4-CP4 (C4) | 64 electrodes according to 10–10 system (Figure A1) |
| Reference | Left earlobe for right hand intervention and vice-versa | Linked ear |
| Ground | Fpz | Fpz |
| Sampling rate (Hz) | 256 | 256 |
| Real-time processing filters | bandstop 48–52 Hz; bandpass 2–40 Hz; both IIR Butterworth order 4 | bandpass 0.1–60 Hz; 50 Hz Notch using IIR digital Butterworth filters built-into the amplifiers |
| Offline pre-processing filters | Rest: bandstop 48–52 Hz; bandpass 1–45 Hz; both IIR Butterworth order 4 | Highpass 1 Hz (FIR, order 846, zero-phase, non-causal)* |