Table 1.

Percentage of time spent in each sleep state during a 6 hr ASD session, a 6 hr GHSD session, and 6 hr of SS (ZT0–6)

State	ASD (% of total time)	GHSD (% of total time)	SS (% of total time)
SWS	27 ± 7*,**	3 ± 2*	62 ± 13
REMS	2 ± 2*	0 ± 0*	10 ± 5
Quiet Wake	23 ± 12	25 ± 8	15 ± 7
Intermediate Wake	28 ± 5**	37 ± 5*	7 ± 3
Active Wake	22 ± 8**	35 ± 10*	7 ± 3

*p < 0.05 difference between SD and SS, Fisher’s LSD.

**p < 0.05 difference between ASD and GHSD, Fisher’s LSD.