Evidence map›Paper›PMID 34489535›Full record

ArticleCommunications biology2021

Loss of consciousness reduces the stability of brain hubs and the heterogeneity of brain dynamics.

Ane López-González, Rajanikant Panda, Adrián Ponce-Alvarez, Gorka Zamora-López, Anira Escrichs, Charlotte Martial, Aurore Thibaut, Olivia Gosseries, Morten L Kringelbach, Jitka Annen and 2 more

Open access · goldAbstract read
In one paragraph

Article in Communications biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
8.4field-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

51 citing papers in PubMed, 110 citations in OpenAlex.

  1. Article
  2. Article
  3. A Virtual Clinical Trial of Psychedelics to Treat Patients With Disorders of Consciousness.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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  8. New imaging techniques and trends in radiology.Diagnostic and interventional radiology (Ankara, Turkey) · 2025
    Review
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  10. Mapping global brain reconfigurations following local targeted manipulations.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  11. Network Mechanisms Underlying the Regional Diversity of Variance and Time Scales of the Brain's Spontaneous Activity Fluctuations.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
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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

12 authors at 4 institutions in 5 countries.

Ane López-González *Computational Neuroscience Group, Center for Brain and Cognition, Universitat Pompeu Fabra, Barcelona, Spain. ane.lopez@upf.edu.ORCID 0000-0001-9109-0424
Rajanikant Panda *GIGA-Consciousness, Coma Science Group, University of Liège, Liège, Belgium.
Adrián Ponce-AlvarezComputational Neuroscience Group, Center for Brain and Cognition, Universitat Pompeu Fabra, Barcelona, Spain.ORCID 0000-0003-1446-7392
Gorka Zamora-LópezComputational Neuroscience Group, Center for Brain and Cognition, Universitat Pompeu Fabra, Barcelona, Spain.ORCID 0000-0001-9361-9619
Anira EscrichsComputational Neuroscience Group, Center for Brain and Cognition, Universitat Pompeu Fabra, Barcelona, Spain.
Charlotte MartialGIGA-Consciousness, Coma Science Group, University of Liège, Liège, Belgium.
Aurore ThibautGIGA-Consciousness, Coma Science Group, University of Liège, Liège, Belgium.
Olivia GosseriesGIGA-Consciousness, Coma Science Group, University of Liège, Liège, Belgium.ORCID 0000-0001-9011-7496
Morten L KringelbachDepartment of Psychiatry, University of Oxford, Oxford, UK.ORCID 0000-0002-3908-6898
Jitka AnnenGIGA-Consciousness, Coma Science Group, University of Liège, Liège, Belgium.ORCID 0000-0002-7459-4345
Steven LaureysGIGA-Consciousness, Coma Science Group, University of Liège, Liège, Belgium.ORCID 0000-0002-3096-3807
Gustavo DecoComputational Neuroscience Group, Center for Brain and Cognition, Universitat Pompeu Fabra, Barcelona, Spain.ORCID 0000-0002-8995-7583
University of Liège · BEUniversitat Pompeu Fabra · ESAarhus University · DKInstitució Catalana de Recerca i Estudis Avançats · ES

Funding

Danmarks Grundforskningsfond (Danish National Research Foundation) DNRF117EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020) 945539Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (Swiss National Science Foundation) 170873
6 · The paper itself

Abstract

Low-level states of consciousness are characterized by disruptions of brain activity that sustain arousal and awareness. Yet, how structural, dynamical, local and network brain properties interplay in the different levels of consciousness is unknown. Here, we study fMRI brain dynamics from patients that suffered brain injuries leading to a disorder of consciousness and from healthy subjects undergoing propofol-induced sedation. We show that pathological and pharmacological low-level states of consciousness display less recurrent, less connected and more segregated synchronization patterns than conscious state. We use whole-brain models built upon healthy and injured structural connectivity to interpret these dynamical effects. We found that low-level states of consciousness were associated with reduced network interactions, together with more homogeneous and more structurally constrained local dynamics. Notably, these changes lead the structural hub regions to lose their stability during low-level states of consciousness, thus attenuating the differences between hubs and non-hubs brain dynamics.

Indexed as

Neural PathwaysAdultAgedAged, 80 and overBrainFemaleHumansMaleMiddle AgedModels, NeurologicalUnconsciousnessYoung Adult

Identifiers

PMID34489535
PMCPMC8421429
OpenAlexW3197558462

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.