Evidence map›Paper›PMID 27091961›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2016

Sex differences in the circadian regulation of sleep and waking cognition in humans.

Nayantara Santhi, Alpar S Lazar, Patrick J McCabe, June C Lo, John A Groeger, Derk-Jan Dijk

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 149 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
149citing papers in PubMed, 3 pooled it
12.6field-weighted citation impact, top 1% 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

149 citing papers in PubMed, 3 syntheses or guidelines pooled it, 281 citations in OpenAlex.

  1. Sleep disturbances in Lewy body dementia: A systematic review.International journal of geriatric psychiatry · 2022
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  15. Wild-Derived House Mice (Mus musculus) Are Able to Cope With a Constant Light Environment.Journal of experimental zoology. Part A, Ecological and integrative physiology · 2026
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89 more citing papers are in PubMed but not listed here.

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

6 authors at 3 institutions in 2 countries.

Nayantara SanthiSurrey Sleep Research Centre, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom; n.santhi@surrey.ac.uk.
Alpar S LazarSurrey Sleep Research Centre, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom; Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 1TN, United Kingdom;
Patrick J McCabeSurrey Clinical Research Centre, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom;
June C LoSurrey Sleep Research Centre, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom; Duke-NUS Medical School, Singapore 169857, Singapore;
John A GroegerSurrey Sleep Research Centre, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom; Department of Psychology, University of Hull, Hull HU6 7RX, United Kingdom.
Derk-Jan DijkSurrey Sleep Research Centre, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom;
University of Surrey · GBDuke-NUS Medical School · SGUniversity of Hull · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The sleep-wake cycle and circadian rhythmicity both contribute to brain function, but whether this contribution differs between men and women and how it varies across cognitive domains and subjective dimensions has not been established. We examined the circadian and sleep-wake-dependent regulation of cognition in 16 men and 18 women in a forced desynchrony protocol and quantified the separate contributions of circadian phase, prior sleep, and elapsed time awake on cognition and sleep. The largest circadian effects were observed for reported sleepiness, mood, and reported effort; the effects on working memory and temporal processing were smaller. Although these effects were seen in both men and women, there were quantitative differences. The amplitude of the circadian modulation was larger in women in 11 of 39 performance measures so that their performance was more impaired in the early morning hours. Principal components analysis of the performance measures yielded three factors, accuracy, effort, and speed, which reflect core performance characteristics in a range of cognitive tasks and therefore are likely to be important for everyday performance. The largest circadian modulation was observed for effort, whereas accuracy exhibited the largest sex difference in circadian modulation. The sex differences in the circadian modulation of cognition could not be explained by sex differences in the circadian amplitude of plasma melatonin and electroencephalographic slow-wave activity. These data establish the impact of circadian rhythmicity and sex on waking cognition and have implications for understanding the regulation of brain function, cognition, and affect in shift-work, jetlag, and aging.

Indexed as

AdultAttentionCircadian RhythmCognitionFemaleHumansMaleMemory, Short-TermModels, NeurologicalPsychomotor PerformanceSex FactorsSleepWakefulnessbiological rhythmscognitiongendermelatoninslow wave sleep

Identifiers

PMID27091961
PMCPMC4868418
OpenAlexW2339586650

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.