REM sleep
REM sleep
nounDefinition of REM SLEEP
: a state of sleep that recurs cyclically several times during a normal period of sleep and that is characterized especially by increased neuronal activity of the forebrain and midbrain, depressed muscle tone, dreaming, and rapid eye movements —called also paradoxical sleep, rapid eye movement sleep — compare slow-wave sleep
See First Known Use of REM SLEEP
1965
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