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Evidence for Circadian Influence on Human Slow Wave Sleep During Daytime Sleep Episodes
Author(s) -
Campbell Scott S.,
Zulley Juergen
Publication year - 1989
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1989.tb00714.x
Subject(s) - circadian rhythm , sleep (system call) , wakefulness , slow wave sleep , psychology , free running sleep , nocturnal , sleep onset , chronotype , daytime , non rapid eye movement sleep , audiology , medicine , electroencephalography , neuroscience , insomnia , psychiatry , circadian clock , light effects on circadian rhythm , atmospheric sciences , computer science , operating system , geology
The occurrence of slow wave sleep within spontaneously initiated daytime sleep episodes was studied to examine hypothesized associations with prior wakefulness and circadian factors. There was a strong relationship between measures of slow wave sleep and the proximity of sleep episodes to the maximum of body core temperature. Those sleep episodes that began within 4 hours of the maximum in body core temperature contained significantly more slow wave sleep than did all other daytime sleep periods, approximating proportions typical of nocturnal sleep. Multiple regression analysis revealed no relationship between measures of slow wave sleep and prior wakefulness. These findings are consistent with an hypothesized approximately‐12‐hour rhythm in the occurrence of slow wave sleep and they underscore the influence imposed on human sleep by the endogenous circadian timing system.