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Power Density in Theta/Alpha Frequencies of the Waking EEG Progressively Increases During Sustained Wakefulness
Open accessAbstract
Electroencephalogram (EEG) power density and self-rated fatigue were assessed in nine healthy women during a 40-hour period of sustained wakefulness under constant behavioral and environmental conditions (constant routine protocol). Waking EEG recordings were performed for 4 minutes after 3, 10, 27 and 34 hours of prior wakefulness. EEG power density in the 6.25- to 9.0-Hz frequency range progressively increased across the four recordings, suggesting an endogenous homeostatic component in the regulation of the theta/alpha frequencies under constant conditions. Subjective fatigue also exhibited an increasing component in the course of the constant routine protocol, with a clear circadian modulation. Fatigue ratings and the theta/ alpha power density of the waking EEG recorded at the same four time points during the constant routine protocol correlated significantly. Our data demonstrate the presence of a homeostatic component in the control of EEG power density in the 6.25- to 9.0-Hz range.
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Metadata
- Authors
- Cajochen, C., Brunner, D. P., Krauchi, K., Graw, P., & Wirz-Justice, A.
- Venue
- Sleep
- Publisher
- Oxford University Press (OUP)
- Published
- 1995-12
- Volume
- 18
- Issue
- 10
- Pages
- 890-894
- ISSN
- 0161-8105 (ISSN-L)
- 1550-9109
- OpenAlex
- W2411632744
- Cited by
- 346
- References
- 2
- FWCI
- 1.45
- Type
- journal article
- Language
- en
- Open access
- bronze
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