Cited by 355Sleep and Wakefulness ResearchNeural dynamics and brain functionMemory and Neural Mechanisms

Are corticothalamic ‘up’ states fragments of wakefulness?

Open access
Destexhe, Alain, Hughes, Stuart W., Rudolph, Michelle, Crunelli, Vincenzo·2007·Trends in Neurosciences

Abstract

The slow (<1 Hz) oscillation, with its alternating 'up' and 'down' states in individual neurons, is a defining feature of the electroencephalogram (EEG) during slow-wave sleep (SWS). Although this oscillation is well preserved across mammalian species, its physiological role is unclear. Electrophysiological and computational evidence from the cortex and thalamus now indicates that slow-oscillation 'up' states and the 'activated' state of wakefulness are remarkably similar dynamic entities. This is consistent with behavioural experiments suggesting that slow-oscillation 'up' states provide a context for the replay, and possible consolidation, of previous experience. In this scenario, the T-type Ca(2+) channel-dependent bursts of action potentials that initiate each 'up' state in thalamocortical (TC) neurons might function as triggers for synaptic and cellular plasticity in corticothalamic networks. This review is part of the INMED/TINS special issue Physiogenic and pathogenic oscillations: the beauty and the beast, based on presentations at the annual INMED/TINS symposium (http://inmednet.com).

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Crossref · 10.1016/j.tins.2007.04.006

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  • There is evidence that ODP critically depends on T-type calcium channel function, which also plays an essential role in generating spindles and slow oscillations during non-REM sleep.

    “Interestingly, there is evidence that ODP critically depends on the T-type calcium channel function ( 1224), which also plays an essential role in the generation of spindles and slow oscillations during non-REM sleep (282, 283).”

    From About Sleep's Role in Memory (2013) · cites this paper as [282]

    Box 1 (Concluding remarks; page unavailable) describes T-type Ca²⁺ channel-mediated bursts at the start of slow-oscillation UP states and links sleep spindles to those states. The section on T-type Ca²⁺ channel-mediated bursts proposes that these bursts might trigger UP states, but the paper does not establish that T-type channel function is essential to generating both spindles and slow oscillations. The ODP claim is attached to a different citation and is not assessed here. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • Slow waves in NREM sleep reflect a slow oscillation of cortical neurons between UP and DOWN states.

    “We now know that slow waves in NREM sleep reflect a slow oscillation of cortical neurons between UP and DOWN states (Fig. 2)[77, 78].”

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Research works printed but not linked: 1

  1. [61]Amzica F Steriade M Cellular substrates and laminar profile of sleep K-complex Neuroscience 2001 82 671 686 9483527

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Authors
Destexhe, A., Hughes, S. W., Rudolph, M., & Crunelli, V.
Affiliations
Cardiff University (GB)
Corresponding author
Crunelli, Vincenzo
Venue
Trends in Neurosciences
Publisher
Elsevier BV
Published
2007-07
Volume
30
Issue
7
Pages
334-342
ISSN
0166-2236 (ISSN-L)
OpenAlex
W2157964542
Cited by
355
References
67
Citations by year
2026: 7 · 2025: 16 · 2024: 14 · 2023: 14 · 2022: 15 · 2021: 8 · 2020: 17 · 2019: 21 · 2018: 14 · 2017: 12 · 2016: 24 · 2015: 27 · 2014: 19 · 2013: 22 · 2012: 22
FWCI
1.98
Type
journal article
Language
en
Open access
Locations
  • Trends in Neurosciences (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • HAL (submittedVersion)
  • ORCA Online Research @Cardiff (Cardiff University) (submittedVersion)
Funders
  • Wellcome Trust (078403, 078311, 78403, 78311, 071436, 71436)
  • Centre National de la Recherche Scientifique
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
slow oscillations, wakefulness, slow-wave sleep, thalamocortical neurons, T-type calcium channels, synaptic plasticity, memory consolidation, neural replay, EEG oscillations
MeSH terms
Animals, Biological Clocks, Cerebral Cortex, Electroencephalography, Humans, Neural Pathways, Neuronal Plasticity, Neurons, Thalamus, Wakefulness

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