Table 2.

Subjects S1–S6 and experiment overview of the original study conducted in Asahikawa, Japan.

ID	Age	Gender	Handed-ness	Covered hemisphere	Electrode spacinga	Electrodes total	Electrodes selected	Coverage motorb	Coverage somatosensoryb	Protocolc	Trials per class
S1	35	Female	Right	Right	Macro	98	20	7–8	5–7	RPS	30
S2	26	Male	Right	Right	Micro	140	60	26–32	19–24	FTPU RPS	40 40
S3	26	Male	Right	Left	Micro	187	60	29–36	22–26	FTPU	20
S4	17	Female	Left	Left	Micro	164	60	29–37	12–17	FTPD FTPU RPS	75 86 65
S5	22	Male	Right	Right	Micro	158	60	5–7	27–34	FTPU RPS	97 76
S6	37	Male	Right	Right	Macro	100	18	7–9	4–7	RPS	60

^aMacro, standard ECoG grid; Micro, high-density ECoG grid.

^bEstimated number of electrodes, based on Figure 1.

^cRPS, rock-paper-scissors; FTPD, finger tapping, palm down; FTPU, finger tapping, palm up.