High frequency waking EEG: reflection of a slow ultradian rhythm in daytime arousal
Abstract
The ultradian dynamics of the human waking EEG was studied using a short visual fixation task repeated every 10 min throughout the daytime. The EEG spectra obtained from the tasks were assessed for time effect and ultradian periodicity. Fronto-central EEG high frequency powers (22.5-44.5 Hz) decreased at the time of the midafternoon vigilance dip (14.00-17.00 h) along with slight concomitant increases in parietal alpha (7.5-13.5 Hz) and delta (1-3 Hz) powers. A slow ultradian rhythm with a 3-4 h periodicity strongly modulated EEG power in all frequency bands between 1 and 44.5 Hz. The high frequency waking EEG may well reflect the activity of a brain arousal process underlying maintenance of the waking state probably throughout the 24 h cycle.
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A functional link between the regulatory mechanisms controlling HPA activity and the level of central arousal has been hypothesized.
“Given that high-frequency EEG over 20 Hz is considered a marker of daytime arousal [64], a functional link between the regulatory mechanisms controlling the HPA activity and the level of central arousal has been hypothesized.”
From Impact of Sleep and Its Disturbances on Hypothalamo-Pituitary-Adrenal Axis Activity (2010) · cites this paper as [64]
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Impact of Sleep and Its Disturbances on Hypothalamo-Pituitary-Adrenal Axis Activity
Balbo, M., Leproult, R., & Van Cauter, E. (2010) · International Journal of Endocrinology · doi:10.1155/2010/759234 · Cited by 408 · see citing works
“Given that high-frequency EEG over 20 Hz is considered a marker of daytime arousal [64], a functional link between the regulatory mechanisms controlling the HPA activity and the level of central arousal has been hypothesized.”
BackgroundChapotot, F., Buguet, A., Gronfier, C., & Brandenberger, G. (2001) · Neuroendocrinology · doi:10.1159/000054648 · Cited by 72 · see citing works
Self-citation
- Authors
- Chapotot, F., Jouny, C., Muzet, A., Buguet, A., & Brandenberger, G.
- Affiliations
- Service de Santé des Armées (FR)
- University Hospital of Geneva (CH)
- Centre National de la Recherche Scientifique (FR)
- Venue
- NeuroReport
- Published
- 2000-07
- Volume
- 11
- Issue
- 10
- Pages
- 2223-2227
- ISSN
- 0959-4965 (ISSN-L)
- OpenAlex
- W2130615381
- Cited by
- 26
- References
- 15
- Citations by year
- 2022: 1 · 2020: 2 · 2017: 1 · 2016: 2 · 2015: 2 · 2013: 2 · 2012: 3
- FWCI
- 1.13
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neuroreport (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Keywords
- ultradian rhythms, waking EEG, EEG power spectra, high-frequency EEG, alpha power, delta power, brain arousal, circadian rhythm
- MeSH terms
- Activity Cycles, Adult, Alpha Rhythm, Arousal, Biological Clocks, Cerebral Cortex, Delta Rhythm, Electroencephalography, Electromyography, Electrooculography, Fixation, Ocular, Frontal Lobe, Humans, Male, Parietal Lobe, Wakefulness, Artifacts
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