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Body posture affects electroencephalographic activity and psychomotor vigilance task performance in sleep-deprived subjects
Abstract
Objective This study examined the effects of posture on electroencephalographic (EEG) activity and psychomotor vigilance task (PVT) performance in 16 sleep-deprived volunteers.Methods EEG data were collected while participants completed 10 min PVTs under two counterbalanced sitting/standing conditions during 28 h of continuous wakefulness.Results In both the sitting and standing conditions, theta activity progressively increased as a function of sleep loss, but standing upright significantly attenuated this effect, suggesting that alertness was improved by the more upright posture. The PVT results showed that cognitive psychomotor performance was maintained at nearly well-rested levels by standing upright, whereas reaction time and attention noticeably deteriorated when participants were seated.Conclusions These results suggest that an upright posture increases EEG arousal and sustained attention, indicating that postural manipulations can be useful for counteracting fatigue in sleep-deprived individuals.
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“In real life, sleep onset and maintenance also depend on whether some seemingly trivial yet crucial conditions are met, like having attained an appropriate posture.”
From Sleep, vigilance, and thermosensitivity (2012) · cites this paper as [13]
In the citing paper
“Being in a supine position is being in a sleep-permissive condition, whereas being upright is being in a wake-promoting condition [2, 13, 14, 18, 49, 62].”
From Sleep, vigilance, and thermosensitivity (2012) · cites this paper as [13]
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Metadata
- Authors
- Caldwell, J. A., Prazinko, B., & Caldwell, J. L.
- Affiliations
- United States Army Aeromedical Research Lab (US)
- Corresponding author
- Caldwell, John A
- ORCID
- Caldwell, John A
- Venue
- Clinical Neurophysiology
- Publisher
- Elsevier BV
- Published
- 2003-01
- Volume
- 114
- Issue
- 1
- Pages
- 23-31
- ISSN
- 1388-2457 (ISSN-L)
- OpenAlex
- W1964195194
- Cited by
- 150
- References
- 25
- Citations by year
- 2026: 2 · 2025: 7 · 2024: 5 · 2023: 2 · 2022: 10 · 2021: 12 · 2020: 11 · 2019: 7 · 2018: 15 · 2017: 2 · 2016: 6 · 2015: 4 · 2014: 7 · 2013: 11 · 2012: 5
- FWCI
- 5.28
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Clinical Neurophysiology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Mind wandering and attention
- Keywords
- posture, sleep deprivation, electroencephalographic activity, theta activity, psychomotor vigilance task, sustained attention, reaction time, standing posture, sitting posture, alertness, fatigue countermeasures, EEG arousal
- MeSH terms
- Adult, Alpha Rhythm, Beta Rhythm, Brain, Delta Rhythm, Electroencephalography, Female, Humans, Male, Posture, Psychomotor Performance, Reference Values, Sleep Deprivation, Task Performance and Analysis, Theta Rhythm
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