Evidence map›Paper›PMID 33833082›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2021

Cell-Type-Specific Dynamics of Calcium Activity in Cortical Circuits over the Course of Slow-Wave Sleep and Rapid Eye Movement Sleep.

Niels Niethard, Svenja Brodt, Jan Born

Open access · hybridAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.5field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 50 citations in OpenAlex.

  1. Review
  2. Article
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  6. Sleep and immune health: How dogs, goats and 'factor S' shaped a field.Neurobiology of sleep and circadian rhythms · 2025
    Article
  7. Phasic Dopamine Release in the Nucleus Accumbens Influences REM Sleep Timing.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  8. Article
  9. REM refines and rescues memory representations: a new theory.Sleep advances : a journal of the Sleep Research Society · 2025
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
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  17. Article
  18. How sleep shapes what we remember-and forget.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Niels NiethardInstitute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen 72076, Germany niels.niethard@uni-tuebingen.de jan.born@uni-tuebingen.de.ORCID 0000-0001-7939-1021
Svenja BrodtInstitute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen 72076, Germany.
Jan BornInstitute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen 72076, Germany niels.niethard@uni-tuebingen.de jan.born@uni-tuebingen.de.ORCID 0000-0002-1847-6248
University of Tübingen · DEBernstein Center for Computational Neuroscience Tübingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sleep shapes cortical network activity, fostering global homeostatic downregulation of excitability while maintaining or even upregulating excitability in selected networks in a manner that supports memory consolidation. Here, we used two-photon calcium imaging of cortical layer 2/3 neurons in sleeping male mice to examine how these seemingly opposing dynamics are balanced in cortical networks. During slow-wave sleep (SWS) episodes, mean calcium activity of excitatory pyramidal (Pyr) cells decreased. Simultaneously, however, variance in Pyr population calcium activity increased, contradicting the notion of a homogenous downregulation of network activity. Indeed, we identified a subpopulation of Pyr cells distinctly upregulating calcium activity during SWS, which were highly active during sleep spindles known to support mnemonic processing. Rapid eye movement (REM) episodes following SWS were associated with a general downregulation of Pyr cells, including the subpopulation of Pyr cells active during spindles, which persisted into following stages of sleep and wakefulness. Parvalbumin-positive inhibitory interneurons (PV-In) showed an increase in calcium activity during SWS episodes, while activity remained unchanged during REM sleep episodes. This supports the view that downregulation of Pyr calcium activity during SWS results from increased somatic inhibition via PV-In, whereas downregulation during REM sleep is achieved independently of such inhibitory activity. Overall, our findings show that SWS enables upregulation of select cortical circuits (likely those which were involved in mnemonic processing) through a spindle-related process, whereas REM sleep mediates general downregulation, possibly through synaptic re-normalization.

Indexed as

AnimalsCalcium SignalingCerebral CortexElectroencephalographyElectromyographyMaleMemory ConsolidationMiceMice, TransgenicMicroscopy, Fluorescence, MultiphotonNerve NetNeuroimagingNeuronsParvalbuminsPyramidal CellsSleep, REMParvalbuminscalcium imagingREMsleepslow oscillationslow-wave sleepspindle

Identifiers

PMID33833082
PMCPMC8143210
OpenAlexW3151438520

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.