Evidence map›Paper›PMID 20469805›Full record

ArticleSleep2010

Circadian regulation of sleep and the sleep EEG under constant sleep pressure in the rat.

Roman Yasenkov, Tom Deboer

Open access · bronzeAbstract read
In one paragraph

Article in Sleep, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.9field-weighted citation impact, top 32% 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

17 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
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  4. Review
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  9. Review
  10. Review
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  12. The Neurobiology of Sleep and Wakefulness.The Psychiatric clinics of North America · 2015
    Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Hippocampal memory consolidation during sleep: a comparison of mammals and birds.Biological reviews of the Cambridge Philosophical Society · 2011
    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

2 authors at 1 institution in 1 country.

Roman YasenkovLaboratory for Neurophysiology, Department of Molecular Cell Biology Leiden University Medical Center, Leiden, The Netherlands.
Tom Deboer
Leiden University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectiveSleep is regulated by homeostatic and circadian processes. Slow wave activity (SWA; 1-4 Hz) in the NREM sleep electroencephalogram (EEG) reflects sleep homeostasis. Activity of faster EEG frequencies (10-25 Hz) is thought to be under influence of circadian factors. The relative contribution of both processes to the distribution of sleep and wakefulness and EEG activity in rodents remains uncertain.

designContinuous EEG recording in rats in constant dark conditions (DD) were performed and a sleep deprivation protocol consisting of 2 h sleep deprivation followed by 2 h of rest (2h/2h) was applied for 48 h to obtain a constant sleep pressure. SETTINGS: Basic sleep research laboratory. PATIENTS OR

participantsAdult male Wistar rats.

interventionSleep deprivation. MEASUREMENTS AND

resultsUnder the 2h/2h protocol, the circadian modulation of waking, NREM and REM sleep was markedly reduced compared to the baseline, affecting the frequency of vigilance state episodes and the duration of REM sleep and waking episodes. In contrast, NREM sleep episode duration still showed a daily modulation. Consecutive 2h values of SWA in NREM sleep were stabile during the 2h\2h protocol, while NREM sleep EEG activity within the higher frequencies (7-25 Hz) still demonstrated strong circadian modulation, which did not differ from baseline.

conclusionsIn rats, the daily modulation of REM sleep is less pronounced compared to NREM sleep and waking. In contrast to SWA, activity in higher frequencies (7-25 Hz) in the NREM sleep EEG have an endogenous circadian origin and are not influenced by sleep homeostatic mechanisms.

Indexed as

Analysis of VarianceAnimalsArousalBehavior, AnimalCircadian RhythmDisease Models, AnimalElectroencephalographyElectromyographyHomeostasisMaleRatsRats, WistarSleepSleep DeprivationSleep, REMStress, Physiological

Identifiers

PMID20469805
PMCPMC2864878
OpenAlexW62980319

What OpenQuestion holds

Textmetadata
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.