Table 1.

Means and SEs of the PSG variables of the REC and NREC groups awakened from REM sleep

Variables	REC		NREC		F_(1,28)	p
Variables	Mean	SE	Mean	SE	F_(1,28)	p
Stage 1 latency (min)	7.32	1.55	9.47	2.35	0.61	0.44
Stage 2 latency (min)	11.11	2.32	13.27	2.37	0.34	0.56
REM latency (min)	84.78	6.87	86.00	11.36	0.009	0.92
Stage 1 (%)	6.28	0.68	6.64	1.18	0.08	0.78
Stage 2 (%)	60.00	1.39	59.26	1.54	0.11	0.74
SWS (%)	10.54	1.62	8.16	1.45	0.89	0.35
REM (%)	23.17	0.88	25.94	1.70	2.58	0.12
WASO (min)	32.01	8.42	23.56	4.10	0.47	0.50
TST (min)	443.30	9.32	435.27	8.79	0.30	0.59
SEI % (TST/TBT)	91.98	1.63	92.87	1.08	0.13	0.72