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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1991-3-28
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pubmed:abstractText |
Human sleep electroencephalograms, recorded in four experiments, were subjected to spectral analysis. Waking prior to sleep varied from 12 to 36 h and sleep was initiated at different circadian phases. Power density of delta and theta frequencies in rapid-eye-movement (REM) sleep and non-REM (NREM) sleep increased monotonically as a function of prior waking. The increase of power density in the theta frequencies contrasts with the reported decrease of theta activity as detected by period-amplitude analysis. Slow wave activity (power density, 0.25-4.0 Hz) in NREM sleep during the first 3 h of sleep did not deviate significantly from the homeostatic process S of the two-process model of sleep regulation. In contrast, visually scored slow wave sleep, stages 3 and 4, deviated from this prediction at some circadian phases. It is concluded that, in accordance with the two-process model of sleep regulation, slow wave activity in NREM sleep depends on prior waking and is not significantly influenced by circadian phase.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0161-8105
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
13
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
430-40
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pubmed:dateRevised |
2009-1-29
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pubmed:meshHeading |
pubmed-meshheading:2287855-Adult,
pubmed-meshheading:2287855-Cerebral Cortex,
pubmed-meshheading:2287855-Circadian Rhythm,
pubmed-meshheading:2287855-Electroencephalography,
pubmed-meshheading:2287855-Evoked Potentials,
pubmed-meshheading:2287855-Humans,
pubmed-meshheading:2287855-Male,
pubmed-meshheading:2287855-Reference Values,
pubmed-meshheading:2287855-Signal Processing, Computer-Assisted,
pubmed-meshheading:2287855-Sleep, REM,
pubmed-meshheading:2287855-Sleep Stages,
pubmed-meshheading:2287855-Wakefulness
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pubmed:year |
1990
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pubmed:articleTitle |
Electroencephalogram power density and slow wave sleep as a function of prior waking and circadian phase.
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pubmed:affiliation |
Institute of Pharmacology, University of Zurich, Switzerland.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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