Table S2.

Summary of the four models considered to describe the recovery sleep dose-response curves, and the null model estimated for comparison purposes.

Model	Model description*	df
0	Null model, constant (mean) plus 4 covariates	1 + 4 = 5
1	Linear dose response	2 + 4 = 6
2	Exponential dose response	3 + 4 = 7
3	Exponential dose response with asymptote set to baseline	2 + 4 = 6
4	Sigmoidal dose response	4 + 4 = 8

^*The following 4 covariates were used: Baseline level, cumulative changes in the prior days of sleep restriction (neurobehavioral responses only, except MWT), age, and sex.