
doi: 10.1007/bf01919851
pmid: 181267
Under the postulated existence of a mechanism regulating the NREM sleep- REM sleep sequence and a reset of this mechanism by long awakenings, the variability of sleep cycle in the rat was studied. Awakenings of various durations were included in the definition of sleep cycle boundaries. Results show that an intervening awakening of 1 min is close to the limit under which the same cycle seems to be resumed after the awakening and above which the previous cycle is abortive and a new cycle will start after the next sleep onset.
Male, Animals, Sleep, REM, Electroencephalography, Sleep Stages, Wakefulness, Circadian Rhythm, Rats
Male, Animals, Sleep, REM, Electroencephalography, Sleep Stages, Wakefulness, Circadian Rhythm, Rats
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