Table 1.

Conditions studied in the split-sleep, dose-response experiment. The table shows the total time in bed (TIB) per 24 h across the 10 sleep restriction days, as a function of nocturnal anchor sleep TIB and diurnal nap sleep TIB, for each of the 18 conditions.

Diurnal nap sleep TIB (h)	Nocturnal anchor sleep TIB (h)
	4.2	5.2	6.2	8.2
0.0	4.2	5.2	6.2	8.2
0.4	4.6	5.2	6.6	*
0.8	5.0	6.0	7.0	*
1.2	5.4	6.4	7.4	*
1.6	5.8	6.8	*	*
2.0	6.2	7.2	*	*
2.4	6.6	*	*	*

^*Condition not studied.