Evidence map›Paper›PMID 26414900›Full record

ArticleSleep2016

Variability in Cumulative Habitual Sleep Duration Predicts Waking Functional Connectivity.

Sakh Khalsa, Stephen D Mayhew, Izabela Przezdzik, Rebecca Wilson, Joanne Hale, Aimee Goldstone, Manny Bagary, Andrew P Bagshaw

Abstract read
In one paragraph

Article in Sleep, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Inhibitory Decay and Supercritical Brain Dynamics During Sleep Deprivation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
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  5. The importance of sleep for the developing brain.Current sleep medicine reports · 2024
    Article
  6. Review
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  18. Integrating sleep, neuroimaging, and computational approaches for precision psychiatry.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
    Review
  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

8 authors.

Sakh KhalsaBirmingham University Imaging Centre (BUIC), School of Psychology, University of Birmingham, Birmingham, UK.
Stephen D MayhewBirmingham University Imaging Centre (BUIC), School of Psychology, University of Birmingham, Birmingham, UK.
Izabela PrzezdzikBirmingham University Imaging Centre (BUIC), School of Psychology, University of Birmingham, Birmingham, UK.
Rebecca WilsonBirmingham University Imaging Centre (BUIC), School of Psychology, University of Birmingham, Birmingham, UK.
Joanne HaleBirmingham University Imaging Centre (BUIC), School of Psychology, University of Birmingham, Birmingham, UK.
Aimee GoldstoneBirmingham University Imaging Centre (BUIC), School of Psychology, University of Birmingham, Birmingham, UK.
Manny BagaryDepartment of Neuropsychiatry, The Barberry National Centre for Mental Health, Birmingham, UK.
Andrew P BagshawBirmingham University Imaging Centre (BUIC), School of Psychology, University of Birmingham, Birmingham, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesWe examined whether interindividual differences in habitual sleep patterns, quantified as the cumulative habitual total sleep time (cTST) over a 2-w period, were reflected in waking measurements of intranetwork and internetwork functional connectivity (FC) between major nodes of three intrinsically connected networks (ICNs): default mode network (DMN), salience network (SN), and central executive network (CEN).

methodsResting state functional magnetic resonance imaging (fMRI) study using seed-based FC analysis combined with 14-d wrist actigraphy, sleep diaries, and subjective questionnaires (N = 33 healthy adults, mean age 34.3, standard deviation ± 11.6 y). Data were statistically analyzed using multiple linear regression. Fourteen consecutive days of wrist actigraphy in participant's home environment and fMRI scanning on day 14 at the Birmingham University Imaging Centre. Seed-based FC analysis on ICNs from resting-state fMRI data and multiple linear regression analysis performed for each ICN seed and target. cTST was used to predict FC (controlling for age).

resultscTST was specific predictor of intranetwork FC when the mesial prefrontal cortex (MPFC) region of the DMN was used as a seed for FC, with a positive correlation between FC and cTST observed. No significant relationship between FC and cTST was seen for any pair of nodes not including the MPFC. Internetwork FC between the DMN (MPFC) and SN (right anterior insula) was also predicted by cTST, with a negative correlation observed between FC and cTST.

conclusionsThis study improves understanding of the relationship between intranetwork and internetwork functional connectivity of intrinsically connected networks (ICNs) in relation to habitual sleep quality and duration. The cumulative amount of sleep that participants achieved over a 14-d period was significantly predictive of intranetwork and inter-network functional connectivity of ICNs, an observation that may underlie the link between sleep status and cognitive performance.

Indexed as

HabitsActigraphyAdultBrainBrain MappingCerebral CortexCognitionFemaleHealthHumansLinear ModelsMagnetic Resonance ImagingMaleMiddle AgedNerve NetRecordscentral executive networkDMNfMRIfunctional connectivityhabitual total sleep timesalience networksleepsleep quality.

Identifiers

PMID26414900
PMCPMC4678343

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.