non-rapid eye movement sleep

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non-rapid eye movement sleep

Non-REMS sleep. See Sleep stages.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

non–rapid eye movement sleep

Abbreviation: NREM sleep
Sleep during which non–rapid eye movements occur. Dreams do not occur in NREM sleep. It has four stages: in stage 1, the transition from wakefulness to sleep occurs; eye movements are slow, and an electroencephalogram (EEG) shows low brain wave activity. In stage 2, EEG activity is increased, and spikes called K complexes appear. In stage 3, eye movement ceases; wave frequency is reduced and amplitude increased. In stage 4, the EEG is dominated by large spikes (delta rhythm). Stages 3 and 4 are considered deep sleep. Synonym: synchronized sleep See: rapid eye movement sleep; sleep
See also: sleep
Medical Dictionary, © 2009 Farlex and Partners

Non-rapid eye movement (NREM) sleep

A type of sleep that differs from rapid eye movement (REM) sleep. The four stages of NREM sleep account for 75-80% of total sleeping time.
Mentioned in: Sleep Disorders
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Non rapid eye movement sleep arousal parasomnias include confusional arousals, sleep terrors (pavor nocturnus) and sleepwalking (somnambulism).
One complete sleep cycle begins with four stages of SWS (slow-wave sleep) or NREM (non rapid eye movement) with alpha waves, followed by a REM (rapid eye movement) period with delta waves and followed again by the four stages of SWS.
DEPRESSION: Feeling low affects hormone levels and the sleep cycles of Non Rapid Eye Movement (NREM) and Rapid Eye Movement (REM) sleep are often unbalanced.
They found that sleep can be separated into two distinct types, non-REM ( non rapid eye movement) and REM (rapid eye movement, or dream sleep).
THE two main distinctive phases of sleep are Non Rapid Eye Movement (NREM) sleep, interspersed with much shorter periods of Rapid Eye Movement (REM) sleep.
The child seems to have difficulty making the transition from NREM (Non Rapid Eye Movement) to wakefulness.

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