Abstract
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.
Keywords
Non-rapid eye movement sleepCircadian rhythmSleep (system call)Slow-wave sleepK-complexPsychologyFree-running sleepNeuroscience of sleepElectroencephalographySleep spindleNeuroscienceAudiologyMedicineCircadian clockLight effects on circadian rhythm
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Publication Info
- Year
- 1990
- Type
- article
- Volume
- 13
- Issue
- 5
- Pages
- 430-440
- Citations
- 206
- Access
- Closed
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Cite This
Derk‐Jan Dijk,
Daniel P. Brunner,
Domien G. M. Beersma
et al.
(1990).
Electroencephalogram Power Density and Slow Wave Sleep as a Function of Prior Waking and Circadian Phase.
SLEEP
, 13
(5)
, 430-440.
https://doi.org/10.1093/sleep/13.5.430
Identifiers
- DOI
- 10.1093/sleep/13.5.430