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. 2016 Oct 18;66(1):51–60. doi: 10.1538/expanim.16-0073

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©2017 Japanese Association for Laboratory Animal Science

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License.

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Fig. 1. — Recordings of sleep stages. The images represent recording samples over 8-s epochs in rats (A), 20-s epochs in cynomolgus monkeys (B), and 20-s epochs in common marmoset monkeys (C). Wake: wakefulness, NREM: non-rapid eye movement sleep, REM: rapid eye movement sleep, EEG: electroencephalogram, EMG: electromyogram, EOG: electrooculogram.