Cited by 40Circadian rhythm and melatoninSleep and Wakefulness ResearchNonlinear Dynamics and Pattern Formation

Processing of daily and seasonal light information in the mammalian circadian clock.

Meijer, Johanna H., Michel, Stephan, Vansteensel, Mariska J.·2007·General and Comparative Endocrinology

Abstract

It is necessary for an organism's survival that many physiological functions and behaviours demonstrate daily and seasonal variations. A crucial component for the temporal control in mammals is the circadian clock located in the suprachiasmatic nucleus (SCN) of the hypothalamus. Neurons in the SCN generate a rhythm in electrical activity with a period of about 24h. The SCN receives photic information from photoreceptive ganglion cells in the retina and processes the information, detecting dawn and dusk as well as encoding day-length. Information processing by the SCN is optimized to extract relevant irradiance information and reduce interferences. Neuronal coupling pathways, including GABAergic signalling, are employed to distribute information and synchronize SCN subregions to form a uniform timing signal. Encoding of day-length is manifested in SCN neuronal activity patterns and may be the product of network interactions rather than being based on the single cell.

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Crossref · 10.1016/j.ygcen.2007.01.018

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48 of 48 references verified0 citation errors · 0 not checkable

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  • The circadian pacemaker of the suprachiasmatic nuclei is a seasonal timepiece through its ability to encode the length of day.

    “Because the circadian pacemaker of the suprachiasmatic nuclei is a seasonal timepiece as well through its ability to encode the length of day [16]”

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Authors
Meijer, J. H., Michel, S., & Vansteensel, M. J.
Affiliations
Leiden University Medical Center (NL)
Corresponding author
Meijer, Johanna H.
Venue
General and Comparative Endocrinology
Publisher
Elsevier BV
Published
2007-06
Volume
152
Issue
2-3
Pages
159-164
ISSN
0016-6480 (ISSN-L)
OpenAlex
W2082678574
Cited by
40
References
48
Citations by year
2023: 1 · 2021: 3 · 2020: 5 · 2019: 1 · 2016: 1 · 2015: 2 · 2014: 3 · 2013: 5 · 2012: 1
FWCI
0.56
Type
journal article
Language
en
Open access
closed
Locations
  • General and Comparative Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Physical Sciences › Computer Science › Computer Networks and Communications › Nonlinear Dynamics and Pattern Formation
Keywords
circadian clock, suprachiasmatic nucleus, seasonal rhythms, GABAergic neurotransmission, neuronal synchronization, irradiance, temporal control
MeSH terms
Animals, Biological Clocks, Circadian Rhythm, Mammals, Suprachiasmatic Nucleus, Photoperiod

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