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. 2013 Aug 1;36(8):1247–1256. doi: 10.5665/sleep.2896

Figure 4.

Figure 4

Compensation for REM sleep debt after diurnal and nocturnal deprivation. Values correspond to the mean (± standard error of the mean) cumulative difference with respect to baseline values starting at the first hour of REM sleep deprivation and including 6 h of recovery. Diurnal deprivation: closed circles; nocturnal deprivation: closed squares. *P = 0.0435, two-tailed paired t-test of RH18 versus RH06 protocol. Horizontal hatched bars represent deprivation intervals. REM, rapid eye movement.