Table 4.

Summary of Previously Reported Data on Baseline Sleep in Rhesus Monkeys.

Study	Recording session	Lighting condition	Restraint method & manipulations	% Asleep during recording	S1/TST %	S2/TST %	S3/TST %	S4/TST %	REM/TST %
Weitzman, 196519	7–8 h nighttime	N.R.	Restraint chair; Sleep deprivation in daytime	N.R.	80a				20
Kripke et al., 196821	7–9 h nighttime	Recorded in light	Restraint chair; Sleep deprivation in daytime	80	85a				15
Bert et al., 197058	8 h nighttime	N.R.	Restraint chair; N.R.	88.7	15.0	33.5	19.5	16.5	15.5
Crowley et al., 197222	24 h	LD 12:12 175 lux: dark	Restraint collar; Undisturbed	51	69b*		18c*		12*
Jacoby, 19727	12 h in either day or night	LD 12:12	Restraint chair; Blood sampling with catheter every 15 min.	L: 6.8*	90.6b*		1.3c*		8.2*
				D: 58.0*	43.7b*		40.9c*		15.3*
David et al., 197559	7 h daytime or 11.3 h nighttime	LD 12:12	Restraint chair; N.R.	L (7 h): 19.5*	91.3b*		6.6c*		1.8
				D (11.3h): 64.0*	61.0b*		21.9c*		10.9
Balzamo et al.,199860	22 h	LD 16:8	Restraint chair; Undisturbed	L (14 h): 18.7*	97.0a*				3.0*
				D: 79.1*	85.8a*				14.2*
Benca et al., 20009	12 h nighttime	L:D 12:12, recorded in dim red light	Restraint chair; N.R.	55.3	9.0	43.8	9.0		5.1
Yu et al., 200461	8 h nighttime for 10 nights	LD 12.5: 11.5	Unrestrained at daytime; Restraint at nighttime	Adult: 86.5*	69.0b*		13.9c*		17.1*
				Adol.: 96.5*	63.7b*		17.7c*		18.9*
Daley et al., 200620	12 h nighttime for 6 or 7 days	LD 12:12	Unrestrained; daily replacement of telemetry batteries	72.0*	10.7*	56.3*	19.9c*		12.6*
Current study	Continuous for 6 days	LD 16:8 13 lux: dark	Unrestrained; Undisturbed	L: 25.2	26.5	34.5	8.3	5.5	25.2
				D: 89.2	10.3	43.6	13.0	11.8	21.4
				24 h: 46.4	15.8	40.2	11.3	9.7	23.0

N.R.: Not reported.

^*Calculated or estimated from the reported data.

^aCollective Percentage of S1-S4/TST.

^bCollective Percentage of S1-S2/TST.

^cCollective Percentage of S3-S4/TST.