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Slow wave activity and slow oscillations in sleepwalkers and controls: effects of 38 h of sleep deprivation
Author(s) -
Perrault Rosemarie,
Carrier Julie,
Desautels Alex,
Montplaisir Jacques,
Zadra Antonio
Publication year - 2013
Publication title -
journal of sleep research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 117
eISSN - 1365-2869
pISSN - 0962-1105
DOI - 10.1111/jsr.12041
Subject(s) - non rapid eye movement sleep , slow wave sleep , sleep deprivation , sleep (system call) , k complex , endocrinology , rapid eye movement sleep , medicine , population , audiology , psychology , circadian rhythm , eye movement , electroencephalography , neuroscience , computer science , operating system , environmental health
Summary Sleepwalkers have been shown to have an unusually high number of arousals from slow wave sleep and lower slow wave activity ( SWA ) power during the night than controls. Because sleep deprivation increases the frequency of slow wave sleep ( SWS ) arousals in sleepwalkers, it may also affect the expression of the homeostatic process to a greater extent than shown previously. We thus investigated SWA power as well as slow wave oscillation ( SWO ) density in 10 sleepwalkers and nine controls at baseline and following 38 h of sleep deprivation. There was a significant increase in SWA during participants' recovery sleep, especially during their second non‐rapid eye movement ( NREM ) period. SWO density was similarly increased during recovery sleep's first two NREM periods. A fronto‐central gradient in SWA and SWO was also present on both nights. However, no group differences were noted on any of the 2 nights on SWA or SWO . This unexpected result may be related to the heterogeneity of sleepwalkers as a population, as well as our small sample size. SWA pressure after extended sleep deprivation may also result in a ceiling effect in both sleepwalkers and controls.