Table 5. Paired t-test for alpha waves according to distance (n=50)

Variables		Paired t-test
		Mean	S.E	S.D	F	Sig
View point 1 (Close-range view)	The state of having FPV	0.1604	0.004	0.286	49	.000
	The state of being without FPV	0.1889	0.003	0.264
View point 2 (middle-range view)	The state of having FPV	0.1602	0.004	0.262	49	.000
	The state of being without FPV	0.1716	0.003	0.242
View point 3 (distant-range view)	The state of having FPV	0.1611	0.004	0.317	49	.000
	The state of being without FPV	0.1848	0.004	0.290