Cited by 209Circadian rhythm and melatoninSleep and Wakefulness ResearchSleep and Work-Related Fatigue

Circadian and wakefulness-sleep modulation of cognition in humans

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Wright, Kenneth P., Lowry, Christopher A., LeBourgeois, Monique K.·2012·Frontiers in Molecular Neuroscience

Abstract

Cognitive and affective processes vary over the course of the 24 h day. Time of day dependent changes in human cognition are modulated by an internal circadian timekeeping system with a near-24 h period. The human circadian timekeeping system interacts with sleep-wakefulness regulatory processes to modulate brain arousal, neurocognitive and affective function. Brain arousal is regulated by ascending brain stem, basal forebrain (BF) and hypothalamic arousal systems and inhibition or disruption of these systems reduces brain arousal, impairs cognition, and promotes sleep. The internal circadian timekeeping system modulates cognition and affective function by projections from the master circadian clock, located in the hypothalamic suprachiasmatic nuclei (SCN), to arousal and sleep systems and via clock gene oscillations in brain tissues. Understanding the basic principles of circadian and wakefulness-sleep physiology can help to recognize how the circadian system modulates human cognition and influences learning, memory and emotion. Developmental changes in sleep and circadian processes and circadian misalignment in circadian rhythm sleep disorders have important implications for learning, memory and emotion. Overall, when wakefulness occurs at appropriate internal biological times, circadian clockwork benefits human cognitive and emotion function throughout the lifespan. Yet, when wakefulness occurs at inappropriate biological times because of environmental pressures (e.g., early school start times, long work hours that include work at night, shift work, jet lag) or because of circadian rhythm sleep disorders, the resulting misalignment between circadian and wakefulness-sleep physiology leads to impaired cognitive performance, learning, emotion, and safety.

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Crossref · 10.3389/fnmol.2012.00050

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Authors
Wright, K. P., Lowry, C. A., & LeBourgeois, M. K.
Affiliations
University of Colorado Boulder (US)
Corresponding author
Wright, Kenneth P.
Venue
Frontiers in Molecular Neuroscience
Published
2012
Volume
5
Pages
50-50
ISSN
1662-5099 (ISSN-L)
OpenAlex
W2073957337
Cited by
209
References
178
Citations by year
2026: 11 · 2025: 9 · 2024: 13 · 2023: 12 · 2022: 14 · 2021: 17 · 2020: 19 · 2019: 15 · 2018: 23 · 2017: 13 · 2016: 11 · 2015: 22 · 2014: 14 · 2013: 9 · 2012: 7
FWCI
7.31
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Frontiers in Molecular Neuroscience (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (R01HL085705, R01HL109706)
  • National Institute of Mental Health (K01MH074643, R01MH086566, R01MH086539)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
Keywords
circadian rhythm, cognitive performance, brain arousal, suprachiasmatic nucleus, clock genes, circadian misalignment, circadian rhythm sleep disorders, learning and memory, emotions, shift work, jet lag

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