Cited by 34Sleep and Wakefulness ResearchCircadian rhythm and melatoninNeural dynamics and brain function

State-dependent effects of light-dark cycle on somatosensory and visual cortex EEG in rats

Yasuda, Tadanobu, Yasuda, Kyo, Brown, Richard A., Krueger, James M.·2005·American Journal of Physiology-Regulatory, Integrative and Comparative Physiology

Abstract

Somatosensory (SSctx) and visual cortex (Vctx) EEG were evaluated in rats under a 12:12-h light-dark (LD) cycle and under constant light (LL) or constant dark (DD) in each sleep or wake state. Under LD conditions during light period, relative Vctx EEG slow-wave activity (SWA) was higher than that of the SSctx, whereas during dark period, relative Vctx EEG SWA was lower than in the SSctx. These effects were state specific, occurring only during non-rapid eye movement sleep (NREMS). Under LL conditions, the duration of REMS and NREMS during the period that would have been dark if the LD cycle had continued (subjective dark period) was greater than under LD conditions. DD conditions had little effect on the duration of NREMS and REMS. SSctx and Vctx EEG SWA were suppressed by LL during the subjective dark period; however, the degree of Vctx SWA suppression was smaller than that of the SSctx. DD conditions during the subjective light period enhanced SSctx SWA, whereas Vctx SWA was suppressed. Under LL conditions during the subjective dark period, Vctx EEG power was higher than that of the SSctx across a broad frequency range during NREMS, REMS, and wakefulness. During DD, SSctx EEG power during NREMS was higher than that of the Vctx in the delta wave band, whereas SSctx power during REMS and wakefulness was higher than that of the Vctx in frequencies higher than 8 Hz. We concluded that the SSctx and Vctx EEGs are differentially affected by light during subsequent sleep. Results p…

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Crossref · 10.1152/ajpregu.00112.2005

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  • When rats had to rely on their whiskers during the activity period in darkness, subsequent SWA was higher in the somato-sensory cortex compared with a situation in which additional light was available during the active period.

    “When rats had to rely on their whiskers during the activity period in darkness, subsequent SWA was higher in the so-mato-sensory cortex compared with a situation in which additional light was available during the active period (1341).”

    From About Sleep's Role in Memory (2013) · cites this paper as [1341]

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Authors
Yasuda, T., Yasuda, K., Brown, R. A., & Krueger, J. M.
Affiliations
Washington State University (US)
Venue
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology
Published
2005-10
Volume
289
Issue
4
Pages
R1083-R1089
ISSN
  • 0363-6119 (ISSN-L)
  • 1522-1490
OpenAlex
W2119581672
Cited by
34
References
51
Citations by year
2025: 1 · 2023: 1 · 2022: 1 · 2019: 3 · 2016: 1 · 2015: 1 · 2013: 1 · 2012: 2
FWCI
1.32
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Regulatory, Integrative and Comparative Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Neurological Disorders and Stroke (NS-31453, NS-25378, R01NS031453, R01NS025378)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
light-dark cycle, somatosensory cortex, visual cortex, EEG slow-wave activity, sleep-wake states, REM sleep, NREM sleep, constant light, constant darkness, afferent input, delta power, rats
MeSH terms
Adaptation, Physiological, Animals, Biological Clocks, Circadian Rhythm, Darkness, Electroencephalography, Light, Male, Periodicity, Photic Stimulation, Somatosensory Cortex, Visual Cortex, Wakefulness, Rats, Sprague-Dawley, Photoperiod, Rats

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