Table 4. Changes in power levels of each frequency band.

Weeks	0.02–0.2 Hz		0.2–2 Hz		2–10 Hz
	M/L direction	A/P direction	M/L direction	A/P direction	M/L direction	A/P direction
2	0.37 ± 0.39	0.26 ± 0.33	0.48 ± 0.67	0.27 ± 0.23	0.01 ± 0.02	0.01 ± 0.01
4	0.37 ± 0.48	0.22 ± 0.15	0.28 ± 0.44**	0.17 ± 0.11**	0.01 ± 0.02**	0.00 ± 0.00**
6	0.22 ± 0.30	0.17 ± 0.10	0.14 ± 0.17**, †	0.14 ± 0.08**, †	0.00 ± 0.00**, †	0.00 ± 0.00**

**: p<0.01 between 2 and 4/6 weeks data, †: p<0.05 between 4 and 6 weeks data