Table 2. H-test for alpha waves according to measurement location (n=50)

Variables		Kruskal-Wallis H test
Measurement location	State	Mean	df	Chi-squared (x2)	Sig
Fp1	Resting state	.195	2	82.684	.000
	The state of having FPV	.146
	The state of being without FPV	.175
Fp2	Resting state	.196	2	87.167	.000
	The state of having FPV	.149
	The state of being without FPV	.189
F3	Resting state	.226	2	78.600	.000
	The state of having FPV	.149
	The state of being without FPV	.177
F4	Resting state	.230	2	99.500	.000
	The condition of having FPV	.155
	The state of being without FPV	.181
O1	Resting state	.264	2	48.295	.000
	The state of having FPV	.178
	The state of being without FPV	.192
O2	Resting state	.252	2	45.536	.000
	The state of having FPV	.170
	The state of being without FPV	.181
P3	Resting state	.269	2	61.151	.000
	The state of having FPV	.169
	The state of being without FPV	.180
P4	Resting state	.275	2	75.138	.000
	The state of having FPV	.170
	The state of being without FPV	.183