Table S2.

Effect of recovery sleep after prolonged sleep deprivation on cognition

Measurement	SD52	REC14	P
Karolinska Sleepiness Scale	8.3 ± 0.8	2.0 ± 0.9	<0.0001
Fatigue checklist (0–20)	15.1 ± 2.4	5.4 ± 2.5	<0.0001
N-back task: Correct responses
3-back	8.4 ± 5.4	12.9 ± 5.5	0.0309
Sum (1- to 3-back)	36.8 ± 11.3	48.9 ± 10.9	0.0083
PVT
Mean reaction speed (1/s)	3.91 ± 0.61	4.74 ± 0.69	0.0001
Lapses	4.23 ± 5.1	0.38 ± 0.77	0.0213

P values represent two-tailed paired t test. Values are given as mean ± SD. n = 14 (except for PVT, n = 13).