Cited by 49Circadian rhythm and melatoninNonlinear Dynamics and Pattern FormationSleep and Wakefulness Research

In synch but not in step: Circadian clock circuits regulating plasticity in daily rhythms

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Evans, J.A., Gorman, M.R.·2016·Neuroscience

Abstract

The suprachiasmatic nucleus (SCN) is a network of neural oscillators that program daily rhythms in mammalian behavior and physiology. Over the last decade much has been learned about how SCN clock neurons coordinate together in time and space to form a cohesive population. Despite this insight, much remains unknown about how SCN neurons communicate with one another to produce emergent properties of the network. Here we review the current understanding of communication among SCN clock cells and highlight a collection of formal assays where changes in SCN interactions provide for plasticity in the waveform of circadian rhythms in behavior. Future studies that pair analytical behavioral assays with modern neuroscience techniques have the potential to provide deeper insight into SCN circuit mechanisms.

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Crossref · 10.1016/j.neuroscience.2016.01.072

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  • Under certain circumstances, the oscillations of E and M can become dissociated from one another; coupling forces between the two components continue to operate and tend to draw the components into either of two metastable modes of coupling that are 180° apart.

    “Under certain circumstances, the oscillations of E and M can become dissociated from one another. In this situation, coupling forces between the two components continue to operate and tend to draw the components into either of two metastable modes of coupling that are 180° apart17,19.”
  • As the interval between dusk and dawn changes over the course of the year in a natural light environment, E and M make corresponding adjustments in duration of the interval between sleep-onset and wake-onset.

    “As the interval between dusk and dawn changes over the course of the year in a natural light environment, E and M make corresponding adjustments in duration of the interval between sleep-onset and wake-onset17,18.”
  • In many types of animals, the same two components detect seasonal changes in duration of the photoperiod and regulate the timing of seasonal rhythms in their behavior.

    “The link is based on the fact that in many types of animals, these same two components detect seasonal changes in duration of the photoperiod and regulate the timing of seasonal rhythms in their behavior17.”

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Authors
Evans, J. A., & Gorman, M. R.
Affiliations
  • Marquette University (US)
  • University of San Diego (US)
Corresponding author
Evans, J.A.
Venue
Neuroscience
Publisher
Elsevier BV
Published
2016-04
Volume
320
Pages
259-280
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2267686818
Cited by
49
References
293
Citations by year
2026: 3 · 2025: 2 · 2024: 4 · 2023: 1 · 2022: 2 · 2021: 5 · 2020: 6 · 2019: 5 · 2018: 10 · 2017: 6 · 2016: 5
FWCI
0.92
Type
journal article
Language
en
Open access
Locations
  • Neuroscience (acceptedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • e-Publications@Marquette (Marquette University) (submittedVersion)
Funders
  • National Institutes of Health (R01NS091234)
  • National Science Foundation (NICHD-36460, IBN-0346391)
  • Whitehall Foundation (2014-12-65)
  • Office of Naval Research (N00014-13-1-0285)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Physical Sciences › Computer Science › Computer Networks and Communications › Nonlinear Dynamics and Pattern Formation
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
Keywords
suprachiasmatic nucleus, circadian clock, clock neurons, neuronal synchronization, neural communication, network plasticity, daily rhythms
MeSH terms
Animals, Circadian Rhythm, Humans, Nerve Net, Neuronal Plasticity, Neurons, Suprachiasmatic Nucleus, Circadian Clocks

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