Table 8. Comparison of Classification Accuracy by Using Single Frequency Band Against Using Total Frequency Bands Base on Correlation, Coherence and Phase Synchronization Index with Feature Selection.

	Total -Theta			Total -Alpha			Total - Beta			Total - Gamma
	df	t	p	df	t	p	df	t	p	df	t	p
Correlation	49	10.37**	4.84×10−17	49	14.65**	2.76×10−26	–			–
Coherence	49	11.77**	2.41×10−20	49	14.05**	2.26×10−24	49	16.19**	2.80×10−28	–
PSI	49	17.11**	1.18×10−27	49	24.08**	2.34×10−37	49	21.27**	1.19×10−32	49	18.78**	2.20×10−32

Note: **Accuracy by using total frequency band is significant higher than that using single frequency band, p<.01.