REM sleep

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REM sleep

A period of sleep during which dreaming takes place, characterized by rapid periodic twitching movements of the eye muscles and other physiological changes, such as accelerated respiration and heart rate, increased brain activity, and muscle relaxation. REM sleep is the fifth and last stage of sleep that occurs in the sleep cycle, preceded by four stages of non-REM sleep. Also called paradoxical sleep.

[r(apid) e(ye) m(ovement).]

REM′ sleep`

rapid eye movement sleep: a recurrent sleep pattern during which dreaming occurs while the eyes rapidly shift under closed lids. Compare slow-wave sleep.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.REM sleep - a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep
sleep, slumber - a natural and periodic state of rest during which consciousness of the world is suspended; "he didn't get enough sleep last night"; "calm as a child in dreamless slumber"
References in periodicals archive ?
But, in general, people alternate among several different levels of non-REM and REM sleep every night.
We found that persons experiencing less REM sleep over the course of a night displayed an increased risk of developing dementia in the future," Pase said.
Fall short on REM sleep and its quite possible youll wind up feeling cranky or irritable.
The study found that as the amount of REM sleep decreased, the risk of dementia increased.
We set out to discover which stages of sleep may be linked to dementia and while we did not find a link with deep sleep, we did with REM sleep.
Methods: This study comprised 24 MSA-P patients and 30 PD patients, and they were of similar age, gender, and REM sleep behavior disorder (RBD) prevalence.
They can "switch on" the cells to cause a rapid transition into REM sleep, he said.
Dreamless REM sleep is anti-ageing, great for the immune system and repairs the body,' says Dr Nerina.
In people with REM sleep behavior disorder, RBD, muscles remain active.
McNamara proposes and explores the theory that a key source of religious beliefs is REM sleep and dreams.
The findings suggest that REM sleep is necessary for memory consolidation, and that without it, memories may be disrupted or erased.
Recent studies specifically looking at REM sleep and memory have provided us with valuable information about the important potential role of REM sleep and memory.