Evidence map›Paper›PMID 34735431›Full record

ArticlePLoS biology2021

An altered balance of integrated and segregated brain activity is a marker of cognitive deficits following sleep deprivation.

Nathan E Cross, Florence B Pomares, Alex Nguyen, Aurore A Perrault, Aude Jegou, Makoto Uji, Kangjoo Lee, Fatemeh Razavipour, Obaï Bin Ka'b Ali, Umit Aydin and 3 more

Open access · goldAbstract read
In one paragraph

Article in PLoS biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 9% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Brain connectivity changes associated with acute sleep deprivation: a systematic review.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
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  11. Human brain state dynamics reflect individual neuro-phenotypes.bioRxiv : the preprint server for biology · 2024
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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

13 authors at 5 institutions in 3 countries.

Nathan E CrossPERFORM Centre, Concordia University, Montreal, Canada.ORCID 0000-0002-7325-7646
Florence B PomaresPERFORM Centre, Concordia University, Montreal, Canada.ORCID 0000-0002-1139-9825
Alex NguyenPERFORM Centre, Concordia University, Montreal, Canada.ORCID 0000-0001-9773-3515
Aurore A PerraultPERFORM Centre, Concordia University, Montreal, Canada.ORCID 0000-0003-2839-610X
Aude JegouPERFORM Centre, Concordia University, Montreal, Canada.ORCID 0000-0002-4253-4284
Makoto UjiPERFORM Centre, Concordia University, Montreal, Canada.ORCID 0000-0002-9445-6353
Kangjoo LeeMultimodal Functional Imaging Lab, Department of Physics, Concordia University, Montreal, Canada.
Fatemeh RazavipourPERFORM Centre, Concordia University, Montreal, Canada.
Obaï Bin Ka'b AliPERFORM Centre, Concordia University, Montreal, Canada.
Umit AydinPERFORM Centre, Concordia University, Montreal, Canada.ORCID 0000-0002-6327-7811
Habib BenaliPERFORM Centre, Concordia University, Montreal, Canada.ORCID 0000-0001-7158-1218
Christophe GrovaPERFORM Centre, Concordia University, Montreal, Canada.
Thien Thanh Dang-VuPERFORM Centre, Concordia University, Montreal, Canada.
Concordia University · CAInstitut Universitaire de Gériatrie de Montréal · CAMcGill University · CAKing's College London · GBYale University · US

Funding

CIHR MOP-133619CIHR MOP 142191CIHR PJT 153115CIHR PJT 156125CIHR PJT-159948CIHR PJT 166167
6 · The paper itself

Abstract

Sleep deprivation (SD) leads to impairments in cognitive function. Here, we tested the hypothesis that cognitive changes in the sleep-deprived brain can be explained by information processing within and between large-scale cortical networks. We acquired functional magnetic resonance imaging (fMRI) scans of 20 healthy volunteers during attention and executive tasks following a regular night of sleep, a night of SD, and a recovery nap containing nonrapid eye movement (NREM) sleep. Overall, SD was associated with increased cortex-wide functional integration, driven by a rise of integration within cortical networks. The ratio of within versus between network integration in the cortex increased further in the recovery nap, suggesting that prolonged wakefulness drives the cortex towards a state resembling sleep. This balance of integration and segregation in the sleep-deprived state was tightly associated with deficits in cognitive performance. This was a distinct and better marker of cognitive impairment than conventional indicators of homeostatic sleep pressure, as well as the pronounced thalamocortical connectivity changes that occurs towards falling asleep. Importantly, restoration of the balance between segregation and integration of cortical activity was also related to performance recovery after the nap, demonstrating a bidirectional effect. These results demonstrate that intra- and interindividual differences in cortical network integration and segregation during task performance may play a critical role in vulnerability to cognitive impairment in the sleep-deprived state.

Indexed as

BehaviorBiomarkersBrainCerebral CortexCluster AnalysisCognition DisordersConsciousnessFemaleHumansMaleNerve NetSleep DeprivationWakefulnessYoung AdultBiomarkers

Identifiers

PMID34735431
PMCPMC8568176
OpenAlexW3209533489

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.