rapid eye movement sleep

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Related to REM stage: NREM sleep, REM stage of sleep

rap·id eye move·ment sleep

, REM sleep
that state of deep sleep in which rapid eye movements, alert EEG pattern, and dreaming occur; several central and autonomic functions are distinctive during this state.

rapid eye movement sleep

See REM sleep, Sleep stages.

Rapid eye movement (REM) sleep

A phase of sleep during which the person's eyes move rapidly beneath the lids. It accounts for 20-25% of sleep time. Dreaming occurs during REM sleep.
Mentioned in: Sleep Disorders


a period of rest during which volition and consciousness are in partial or complete abeyance and the bodily functions partially suspended; a behavioral state marked by characteristic immobile posture and diminished but readily reversible sensitivity to external stimuli.

sleep deprivation
caused in animals by constant stimulation, e.g. preventing them from lying down, is followed by a compensatory period of prolonged sleep whenever the opportunity arises.
sleep disorders
put to sleep
a common euphemism for euthanasia.
rapid eye movement sleep
that type of sleep characterized by low voltage but fast electroencephalographic activity and little muscular activity except of the ocular muscles. Believed to be the critical or necessary component of sleep. Called also 'sleep of the body' and paradoxical sleep. Called also REM.
References in periodicals archive ?
The duration of naps needed differ between individuals and depend on the duration of the REM stage the night before," he said.
The device which features six LED lights, produce a sequence, apparently notices the longer REM stages and 'enters' the dream via the flashing lights.
Although large amounts of alcohol suppress the first stage of sleep (known as REM), sending us into a deep sleep, as it wears off the suppressed REM stage kicks in too early and we end up tossing and turning.
To add to it, liquor disrupts the "REM" stage of sleep, which is important for a deep and effective slumber, since after drinking the body tends to fall straight into a deep sleep, and only enters the REM stage once the alcohol has been metabolised.
Rao showed that adolescents with a familial risk for depression but without a depression diagnosis experienced shorter REM latency, meaning they reached the REM stage more quickly.
Non-REM and REM stages form a 90-minute sleep cycle that repeats over the course of a night.