Table 3. Comparison of relative beta power over brain area by hand and mirror observation in pre and post-test (unit=µV).

Variables	Situation	Pre-test	Post-test
F3 a**b**c*	Hand Obs	0.30 ± 0.11	0.36 ± 0.11
	Mirror Obs	0.56 ± 0.10	0.41 ± 0.16
F4 a**b*c**	Hand Obs	0.27 ± 0.14	0.32 ± 0.16
	Mirror Obs	0.49 ± 0.11	0.31 ± 0.16
C3 a*b*c*	Hand Obs	0.34 ± 0.12	0.34 ± 0.17
	Mirror Obs	0.49 ± 0.09	0. 34 ± 0.15
C4b*	Hand Obs	0.38 ± 0.16	0.31 ± 0.14
	Mirror Obs	0.43 ± 0.07	0.31 ± 0.13
O1	Hand Obs	0.36 ± 0.14	0.35 ± 0.12
	Mirror Obs	0.40 ± 0.11	0.38 ± 0.08
O2	Hand Obs	0.39 ± 0.12	0.35 ± 0.13
	Mirror Obs	0.38 ± 0.09	0.37 ± 0.11

Values are means ± SD. *p<0.05, **p<0.01. ^aSignificant difference between Hand Obs and Mirror Obs (Situation). ^bSignificant difference between Pre-test and Post-test (Time). ^cSignificant difference between Situation and Time. Hand Obs: hand observation, Mirror Obs: mirror observation