Table 7.

Resulting p-values for Friedman tests to investigate whether the calculated average feature rankings are statistically significant.

Feature	Condition	Ranking by …	p-value
ERP	AUD vs. IDLE	Electrodes	<10−5
ERP	AUD vs. IDLE	Time windows	<10−10
ERP	VIS vs. IDLE	Electrodes	0.12
ERP	VIS vs. IDLE	Time windows	<10−10
POW	AUD vs. IDLE	Electrodes	<10−3
POW	AUD vs. IDLE	Frequency bands	<10−10
POW	VIS vs. IDLE	Electrodes	<10−2
POW	VIS vs. IDLE	Frequency bands	<10−10