Table 1.

Electrode labels (64 channels, 10–5 system) grouped into eight different brain regions

Brain area	Electrode labels
Left parietal	CP5, TP7, P3, P5, P7, P9, PO3, PO7
Left sensorimotor	FC3, T7, C5, C3, C1, CZ, CP1, CP3
Left frontal	FP1, AF7, AF3, F7, F5, F3, FT7, FC5
Frontocentral	FPZ, AFZ, FZ, F1, F2, FC1, FC2, FCZ
Centroparietal/occipital	PZ, P1, P2, POZ, OZ, O1, O2, IZ
Right frontal	FP2, AF8, AF4, F8, F6, F4, FT8, FC6
Right sensorimotor	FC4, T7, C6, C4, C2, CPZ, CP2, CP4
Right parietal	CP6, TP8, P4, P6, P8, P10, PO4, PO8

This step reduced spatial features to aid data interpretation.