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. Author manuscript; available in PMC: 2016 Dec 1.
Published in final edited form as: Psychiatr Clin North Am. 2015 Aug 28;38(4):615–644. doi: 10.1016/j.psc.2015.07.002

Figure 1.

Figure 1

Schematic depiction of major subcortical sleep-wake regulatory populations. Wake-promoting cell groups are green, NREM sleep-promoting cell groups are blue and REM sleep-related cell groups are red. Green boxes with red outlines indicated wake/REM-active populations. Gray boxes indicate local GABA interneurons. Excitatory connections are marked with arrowheads, and inhibitory connections are indicated by blunted terminals. Dotted lines indicate pathways that are inhibited during REM sleep.