Table 1.

Sleep architecture of the night records of the subjects involved in the study (all measures are expressed in minutes)

Patient	Total recording time	Sleep duration	WASO	Wake	S1	S2	S3	REM
#1	690.3	416	187	274.6	59.3	226.7	38.7	91.3
#2	596	542.3	29.6	53.7	45.3	312	66.7	118.3
#3	662.6	247.7	92.3	415	62	146.3	0	39.3
#4	503	461.3	38.7	41.7	10	296.7	86	68.7
#5	450	397	29.3	53	24	168	82.7	122.3
#6	450	347.3	76.3	102.7	26.3	274.3	14.3	32.3
#7	450	294.3	155.6	155.7	34	174.3	20	66
#8	630	522	88.7	108	19	420.7	16.7	65.7
#9	720	574.3	56.7	145.7	15.7	433.3	53.3	72
#10	630	493.3	119.3	136.7	25.7	386.3	36.3	45
#11	576.6	425.3	132.3	151.3	158.7	234.3	0	32.3
#12	600	560	30	40	47	295.7	98	119.3
Mean (SD)	579,9 (95,81)	440.1 (105.5)	86.17 (53.34)	139.8 (109.2)	43.92 (39.83)	280.7 (96.2)	42.72 (34.27)	72.72 (33.46)

As there were no explicit schedules of lights off, we did not analyze sleep latency and sleep efficiency.

WASO, wake after sleep onset refers to wake time after the first epoch of not S1 sleep.