non-rapid eye movement sleep

Non-REMS sleep. See Sleep stages.

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; sleepSee also: sleep

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

单词	non-rapid eye movement sleep
释义	DictionarySeeNREM sleepEncyclopediaSeesleep non-rapid eye movement sleep non-rapid eye movement sleep Non-REMS sleep. See Sleep stages. 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; sleepSee also: sleep 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 AcronymsSeeNREMSThesaurusSeenonrapid eye movement
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