Figure 2.

During recovery intracranial self-stimulation (ICSS) has similar nonrapid eye movement sleep (NREMS) and rapid eye movement sleep (REMS) phenotypes compared to gentle handling-induced sleep deprivation (GH-SDEP). Means and standard errors of (A) time in NREMS, (B) NREMS episode duration, (C) NREMS episode frequency, (D) time in REMS, (E) REMS episode duration and (F) REMS episode frequency after GH-SDEP (white bars) and ICSS-1 (black bars), shown as difference from baseline. Gray background indicates lights off. Baseline versus recovery: *P < 0.05.