Table 2. Features selected for mutual learning.

The table presents all the spatio-spectral features selected for the BCI classifiers trained throughout our pilots’ mutual learning process. Each feature refers to a specific frequency band (2 Hz resolution) and EEG channel location according to the international 10–20 system.

P1			P2
Date	Feature		Date	Feature
	Location	Band (Hz)		Location	Band (Hz)
30/06/2016	C1	22	11/08/2011	C1	26
	C1	24		C1	28
	Cz	12		C1	30
	Cz	20		Cz	30
	Cz	22		C2	26
	Cz	24		C2	28
	C2	18		C2	30
	C2	20		CPz	26
	CP3	20		CPz	28
	CP3	22	08/09/2016	C1	32
	CP3	24		Cz	28
	CPz	18		Cz	30
	CPz	20		Cz	32
14/09/2016	FC4	28		CP3	30
	FC4	32		CP3	32
	Cz	10		CPz	24
	Cz	12		CPz	26
	Cz	20
	Cz	22
	Cz	24
	C4	26
	C4	28
	C4	30
	CP3	22
	CP3	24

Abbreviation: EEG, electroencephalography.