| 释义 |
non-REM sleep
non-REM sleep N5163400 (nŏn′rĕm′)n. A period of sleep characterized by decreased metabolic activity, slowed breathing and heart rate, and the absence of dreaming. Non-REM sleep occurs in the first four of the five stages of the sleep cycle, followed by REM sleep, during which dreaming occurs. Also called NREM sleep, orthodox sleep.non-REM sleep
non-REM sleep (nŏn′rĕm′)n. A period of sleep characterized by decreased metabolic activity, slowed breathing and heart rate, and the absence of dreaming. Non-REM sleep occurs in the first four of the five stages of the sleep cycle, followed by REM sleep, during which dreaming occurs. Also called NREM sleep, orthodox sleep.non-REM sleep Sleep during the intervals between perios of rapid eye movement during which there is no dreaming and the tone is high in the postural muscles. |