NREM sleep


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Related to NREM sleep: Stages of Sleep

NREM sleep

 (ĕn′rĕm′)
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Noun1.NREM sleep - a recurring sleep state during which rapid eye movements do not occur and dreaming does not occur; accounts for about 75% of normal sleep time
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 ?
To test that idea, they examined brain activity during NREM sleep in rats trained to locate rewards in a maze and in rats that explored the maze in a random fashion.
They examined the rats' brain activity during NREM sleep.
NREM sleep, for example, is crucial to memory retention, and to acquiring and refining our motor skills.
NREM parasomnias could result from incomplete awakening from NREM sleep, typically in Stage N3 (slow-wave) sleep.
The results showed that both OSAHS and PS children had higher EEG arousals in their NREM sleep stage.
NREM sleep consists of stages 1 (N1) and 2 (N2) light sleep, which is followed by stages 3 and 4, during which deeper, slow-wave-sleep (SWS) occurs.
NREM sleep is further divided into three stages (NREM 1-3), which reflect different depths of sleep on a continuum.
In an animal model, total sleep time increases during pregnancy, with an early but transient increase in REM duration, a sustained increase in NREM sleep over the course of pregnancy, and increased diurnal sleep during late gestation.
Dynamic central nervous system (CNS) changes that occur during both REM and NREM sleep may contribute to memory encoding, memory consolidation and reconsolidation as well as brain plasticity.
Interestingly, as the night progresses, the amount of deep NREM sleep decreases and the amount of REM sleep increases (Judd, 2010).
19,20) subjects wake up with PaCO2 close to 55 mmHg during NREM sleep and 60 mmHg during REM sleep.
Each cycle consists of NREM sleep followed by REM sleep, and roughly lasts 90-110 minutes.