Table 4.

The effect of Si-Ni-San freeze-dry powder on sleep phase in insomnic rats ($\stackrel{-}{x}$  ± SD).

	n	W	SWS1	SWS2	SWS	REMS	TST (min)
PrS	8	268.31 ± 44.02	161.88 ± 41.80	38.94 ± 15.63	199.56 ± 43.56	12.13 ± 5.13	211.69 ± 44.0
PS	8	380.63 ± 21.52**	83.13 ± 22.80**	12.06 ± 5.22**	95.19 ± 22.39**	4.19 ± 2.19**	99.38 ± 21.52**
PA	8	322.25 ± 41.61##	114.69 ± 46.97	34.13 ± 12.41##	148.81 ± 40.47#	8.94 ± 3.70#	157.75 ± 41.61##

**P < 0.01, *P < 0.05, versus PrS; ^## P < 0.01, ^# P < 0.05, versus PrS: pre-shock, PS: post-shock, PA: post-administration.