nonrapid eye movement

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Related to nonrapid eye movement: NREM sleep, NREM, REM Cycle

non·rap·id eye move·ment (NREM),

slow oscillation of the eyes during sleep.
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Although the average time spent in bed was 8 hours, only 67% of that time was spent sleeping, and nonrapid eye movement sleep made up 87% of the total sleep time.
(15) Instead, sleep is composed of two distinct phases: nonrapid eye movement (NREM) and rapid eye movement (REM) sleep.
Nonrapid eye movement (NREM) sleep: Sleep stages that include the "deeper" stages of sleep in which dreaming typically does not occur.