Evidence map›Paper›PMID 33738899›Full record

ArticleHuman brain mapping2021

Brain network integration dynamics are associated with loss and recovery of consciousness induced by sevoflurane.

Andrea I Luppi, Daniel Golkowski, Andreas Ranft, Rüdiger Ilg, Denis Jordan, David K Menon, Emmanuel A Stamatakis

Open access · goldAbstract read
In one paragraph

Article in Human brain mapping, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

37 citing papers in PubMed, 70 citations in OpenAlex.

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  14. Association of Bidirectional Network Cores in the Brain with Perceptual Awareness and Cognition.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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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

7 authors at 2 institutions in 3 countries.

Andrea I LuppiDivision of Anaesthesia, University of Cambridge, Cambridge, UK.ORCID 0000-0002-3461-6431
Daniel GolkowskiDepartment of Neurology, Klinikum rechts der Isar, Technische Universität München, München, Germany.ORCID 0000-0002-7569-7936
Andreas RanftDepartment of Anaesthesiology and Intensive Care Medicine, Klinikum rechts der Isar, Technische Universität München, München, Germany.
Rüdiger IlgDepartment of Neurology, Klinikum rechts der Isar, Technische Universität München, München, Germany.
Denis JordanDepartment of Anaesthesiology and Intensive Care Medicine, Klinikum rechts der Isar, Technische Universität München, München, Germany.
David K MenonDivision of Anaesthesia, University of Cambridge, Cambridge, UK.ORCID 0000-0002-3228-9692
Emmanuel A StamatakisDivision of Anaesthesia, University of Cambridge, Cambridge, UK.ORCID 0000-0001-6955-9601
TUM Klinikum · DEUniversity of Cambridge · GB

Funding

Department of Health Cambridge Biomedical Research CentreDepartment of Health Senior Investigator AwardMedical Research Council MR/M009041/1
6 · The paper itself

Abstract

The dynamic interplay of integration and segregation in the brain is at the core of leading theoretical accounts of consciousness. The human brain dynamically alternates between a sub-state where integration predominates, and a predominantly segregated sub-state, with different roles in supporting cognition and behaviour. Here, we combine graph theory and dynamic functional connectivity to compare resting-state functional MRI data from healthy volunteers before, during, and after loss of responsiveness induced with different concentrations of the inhalational anaesthetic, sevoflurane. We show that dynamic states characterised by high brain integration are especially vulnerable to general anaesthesia, exhibiting attenuated complexity and diminished small-world character. Crucially, these effects are reversed upon recovery, demonstrating their association with consciousness. Higher doses of sevoflurane (3% vol and burst-suppression) also compromise the temporal balance of integration and segregation in the human brain. Additionally, we demonstrate that reduced anticorrelations between the brain's default mode and executive control networks dynamically reconfigure depending on the brain's state of integration or segregation. Taken together, our results demonstrate that the integrated sub-state of brain connectivity is especially vulnerable to anaesthesia, in terms of both its complexity and information capacity, whose breakdown represents a generalisable biomarker of loss of consciousness and its recovery.

Indexed as

AnesthesiaConnectomeAdultAnesthetics, InhalationBrainConsciousnessDefault Mode NetworkHumansMagnetic Resonance ImagingMaleNerve NetSevofluraneYoung AdultAnesthetics, InhalationSevofluraneanaesthesiacomplexityconsciousnessdynamic functional connectivityintegration-segregationsevofluranesmall-world network

Identifiers

PMID33738899
PMCPMC8127159
OpenAlexW3136858771

What OpenQuestion holds

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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.