Information Sharing in the Brain Indexes Consciousness in Noncommunicative Patients
Open accessAbstract
Neuronal theories of conscious access tentatively relate conscious perception to the integration and global broadcasting of information across distant cortical and thalamic areas. Experiments contrasting visible and invisible stimuli support this view and suggest that global neuronal communication may be detectable using scalp electroencephalography (EEG). However, whether global information sharing across brain areas also provides a specific signature of conscious state in awake but noncommunicating patients remains an active topic of research. We designed a novel measure termed "weighted symbolic mutual information" (wSMI) and applied it to 181 high-density EEG recordings of awake patients recovering from coma and diagnosed in various states of consciousness. The results demonstrate that this measure of information sharing systematically increases with consciousness state, particularly across distant sites. This effect sharply distinguishes patients in vegetative state (VS), minimally conscious state (MCS), and conscious state (CS) and is observed regardless of etiology and delay since insult. The present findings support distributed theories of conscious processing and open up the possibility of an automatic detection of conscious states, which may be particularly important for the diagnosis of awake but noncommunicating patients.
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From The Problem with Phi: A Critique of Integrated Information Theory (2015) · cites this paper as [17]
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Cites
<i>The Brain's Default Network</i>: <i>Anatomy, Function, and Relevance to Disease</i>
Buckner, R. L., Andrews‐Hanna, J. R., & Schacter, D. L. (2008) · Annals of the New York Academy of Sciences · doi:10.1196/annals.1440.011 · Cited by 9,761 · see citing works
Permutation Entropy: A Natural Complexity Measure for Time Series
Bandt, C., & Pompe, B. (2002) · Physical Review Letters · doi:10.1103/physrevlett.88.174102 · Cited by 4,899 · see citing works
(1988) · Cited by 3,656 · see citing works
Experimental and theoretical approaches to conscious processing
Dehaene, S., & Changeux, J.-P. (2011) · Neuron · doi:10.1016/j.neuron.2011.03.018 · Cited by 2,573 · see citing works
Self-citationThe minimally conscious state: Definition and diagnostic criteria
Giacino, J. T., Ashwal, S., Childs, N., Cranford, R., Jennett, B., Katz, D. I., Kelly, J. P., Rosenberg, J. H., Whyte, J., Zafonte, R. D., et al. (2002) · Neurology · doi:10.1212/wnl.58.3.349 · Cited by 2,422 · see citing works
The distinct modes of vision offered by feedforward and recurrent processing
Lamme, V. A. F., & Roelfsema, P. R. (2000) · Trends in Neurosciences · doi:10.1016/s0166-2236(00)01657-x · Cited by 2,338 · cited 2× · see citing works
“Several theories share the hypothesis that this global communication between distant cortical areas defines what we experience as a conscious content [1–6, 16–18].”
BackgroundConscious, preconscious, and subliminal processing: a testable taxonomy
Dehaene, S., Changeux, J.-P., Naccache, L., Sackur, J., & Sergent, C. (2006) · Trends in Cognitive Sciences · doi:10.1016/j.tics.2006.03.007 · Cited by 2,067 · see citing works
Self-citationDetecting awareness in the vegetative state
Owen, A. M., Coleman, M. R., Boly, M., Davis, M. H., Laureys, S., & Pickard, J. D. (2006) · Science · doi:10.1126/science.1130197 · Cited by 1,978 · see citing works
Tononi, G. (1998) · Science · doi:10.1126/science.282.5395.1846 · Cited by 1,561 · see citing works
Willful Modulation of Brain Activity in Disorders of Consciousness
Monti, M. M., Vanhaudenhuyse, A., Coleman, M. R., Boly, M., Pickard, J. D., Tshibanda, L., Owen, A. M., & Laureys, S. (2010) · New England Journal of Medicine · doi:10.1056/nejmoa0905370 · Cited by 1,469 · see citing works
Alkire, M. T., Hudetz, A. G., & Tononi, G. (2008) · Science · doi:10.1126/science.1149213 · Cited by 1,245 · see citing works
Vanhaudenhuyse, A., Noirhomme, Q., Tshibanda, L. J.-F., Bruno, M.-A., Boveroux, P., Schnakers, C., Soddu, A., Perlbarg, V., Ledoux, D., Brichant, J.-F., et al. (2010) · Brain · doi:10.1093/brain/awp313 · Cited by 911 · cited 1× · see citing works
“These anatomical lesions may lead to functional deficits in thalamocortical [27, 28] as well as corticocortical communication [15, 29–31] and to abnormal default mode network activity in VS patients [23, 30–34], all of which would result in reduced mutual information over long corticocortical distances, as observed he…”
BackgroundTiming of the brain events underlying access to consciousness during the attentional blink
Sergent, C., Baillet, S., & Dehaene, S. (2005) · Nature Neuroscience · doi:10.1038/nn1549 · Cited by 888 · see citing works
Self-citationBrain Dynamics Underlying the Nonlinear Threshold for Access to Consciousness
Del Cul, A., Baillet, S., & Dehaene, S. (2007) · PLoS Biology · doi:10.1371/journal.pbio.0050260 · Cited by 753 · see citing works
Self-citationNeural correlates of consciousness in humans
Rees, G., Kreiman, G., & Koch, C. (2002) · Nature Reviews Neuroscience · doi:10.1038/nrn783 · Cited by 742 · see citing works
Neural signature of the conscious processing of auditory regularities
Bekinschtein, T. A., Dehaene, S., Rohaut, B., Tadel, F., Cohen, L., & Naccache, L. (2009) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0809667106 · Cited by 738 · see citing works
Self-citation<i>The Neural Correlates of Consciousness</i>: <i>An Update</i>
Tononi, G., & Koch, C. (2008) · Annals of the New York Academy of Sciences · doi:10.1196/annals.1440.004 · Cited by 627 · see citing works
Preserved Feedforward But Impaired Top-Down Processes in the Vegetative State
Boly, M., Garrido, M. I., Gosseries, O., Bruno, M., Boveroux, P., Caroline Schnakers, A., Massimini, M., Vladimir Litvak, A., Laureys, S., & Friston, K. J. (2011) · Science · doi:10.1126/science.1202043 · Cited by 499 · see citing works
How neuroscience will change our view on consciousness
Lamme, V. A. F. (2010) · Cognitive Neuroscience · doi:10.1080/17588921003731586 · Cited by 487 · see citing works
Recovery of cortical effective connectivity and recovery of consciousness in vegetative patients
Rosanova, M., Gosseries, O., Casarotto, S., Boly, M., Casali, A. G., Bruno, M.-A., Mariotti, M., Boveroux, P., Tononi, G., Laureys, S., et al. (2012) · Brain · doi:10.1093/brain/awr340 · Cited by 457 · see citing works
Converging Intracranial Markers of Conscious Access
Gaillard, R., Dehaene, S., Adam, C., Clémenceau, S., Hasboun, D., Baulac, M., Cohen, L., & Naccache, L. (2009) · PLoS Biology · doi:10.1371/journal.pbio.1000061 · Cited by 440 · see citing works
Self-citationRestoration of thalamocortical connectivity after recovery from persistent vegetative state
Laureys, S., Faymonville, M., Luxen, A., Lamy, M., Franck, G., & Maquet, P. (2000) · The Lancet · doi:10.1016/s0140-6736(00)02271-6 · Cited by 398 · see citing works
Coma and consciousness: paradigms (re)framed by neuroimaging
Laureys, S., & Schiff, N. D. (2012) · NeuroImage · doi:10.1016/j.neuroimage.2011.12.041 · Cited by 397 · see citing works
Impaired Effective Cortical Connectivity in Vegetative State: Preliminary Investigation Using PET
Laureys, S., Goldman, S., Phillips, C. L. M., Bogaert, P. V., Aerts, J. J., Luxen, A., Franck, G., & Maquet, P. (1999) · NeuroImage · doi:10.1006/nimg.1998.0414 · Cited by 382 · see citing works
Fisch, L., Privman, E., Ramot, M., Harel, M., Nir, Y., Kipervasser, S., Andelman, F., Neufeld, M. Y., Kramer, U., Fried, I., et al. (2009) · Neuron · doi:10.1016/j.neuron.2009.11.001 · Cited by 274 · see citing works
Diffusion weighted imaging distinguishes the vegetative state from the minimally conscious state
Fernández‐Espejo, D., Bekinschtein, T. A., Monti, M. M., Pickard, J. D., Junqué, C., Coleman, M. R., & Owen, A. M. (2010) · NeuroImage · doi:10.1016/j.neuroimage.2010.08.035 · Cited by 251 · see citing works
Melloni, L., Schwiedrzik, C. M., Müller, N. G., Rodríguez, E., & Singer, W. (2011) · Journal of Neuroscience · doi:10.1523/jneurosci.4570-10.2011 · Cited by 240 · see citing works
Lehembre, R., Bruno, M., Vanhaudenhuyse, A., Chatelle, C., Cologan, V., Leclercq, Y., Soddu, A., Macq, B. M. M., Laureys, S., & Noirhomme, Q. (2012) · Europe PMC (PubMed Central) · Cited by 197 · see citing works
A higher order Bayesian decision theory of consciousness
Lau, H. C. (2007) · Progress in brain research · doi:10.1016/s0079-6123(07)68004-2 · Cited by 174 · see citing works
Faugeras, F., Rohaut, B., Weiss, N., Bekinschtein, T., Galanaud, D., Puybasset, L., Bolgert, F., Sergent, C., Cohen, L., Dehaene, S., et al. (2012) · Neuropsychologia · doi:10.1016/j.neuropsychologia.2011.12.015 · Cited by 174 · see citing works
Self-citationAssessment of White Matter Injury and Outcome in Severe Brain Trauma
Damien Galanaud, E., Perlbarg, V., Gupta, R., Stevens, R. D., Sanchez-Peña, P., Tollard, É., de Champfleur, N. M., Dinkel, J., Faivre, S., Ares, G. S., et al. (2012) · Anesthesiology · doi:10.1097/aln.0b013e3182755558 · Cited by 155 · see citing works
A French validation study of the Coma Recovery Scale-Revised (CRS-R)
Caroline Schnakers, A., Majerus, S., Giacino, J. T., Vanhaudenhuyse, A., Bruno, M., Boly, M., Moonen, G., Damas, P., Lambermont, B. C., Lamy, M., et al. (2008) · Brain Injury · doi:10.1080/02699050802403557 · Cited by 150 · see citing works
Detailed sensory memory, sloppy working memory
Sligte, I. G. (2010) · Frontiers in Psychology · doi:10.3389/fpsyg.2010.00175 · Cited by 142 · see citing works
Disrupted intrinsic functional connectivity in the vegetative state
Cauda, F., Micon, B. M., Sacco, K., Duca, S., D’Agata, F., Geminiani, G. C., & Canavero, S. (2008) · Journal of Neurology Neurosurgery & Psychiatry · doi:10.1136/jnnp.2007.142349 · Cited by 142 · see citing works
Soddu, A., Vanhaudenhuyse, A., Bahri, M. A., Bruno, M., Boly, M., Athena Demertzi, A., Tshibanda, J., Phillips, C. L. M., Stanziano, M., Ovadia‐Caro, S., et al. (2011) · Human Brain Mapping · doi:10.1002/hbm.21249 · Cited by 140 · see citing works
Causal density and integrated information as measures of conscious level
Seth, A. K., Barrett, A. B., & Barnett, L. (2011) · Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences · doi:10.1098/rsta.2011.0079 · Cited by 127 · see citing works
Newcombe, V., Williams, G. B., Scoffings, D. J., Cross, J., Carpenter, T. A., Pickard, J. D., & Menon, D. K. (2010) · Journal of Neurology Neurosurgery & Psychiatry · doi:10.1136/jnnp.2009.196246 · Cited by 127 · see citing works
What the brain's intrinsic activity can tell us about consciousness? A tri-dimensional view
Northoff, G. (2012) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2012.12.004 · Cited by 120 · see citing works
Deactivation of the Default Mode Network as a Marker of Impaired Consciousness: An fMRI Study
Crone, J. S., Ladurner, G., Höller, Y., Golaszewski, S. M., Trinka, E., & Kronbichler, M. (2011) · PLoS ONE · doi:10.1371/journal.pone.0026373 · Cited by 115 · see citing works
Fingelkurts, A. A., Fingelkurts, A. A., Bagnato, S., Boccagni, C., & Galardi, G. (2011) · Consciousness and Cognition · doi:10.1016/j.concog.2011.10.004 · Cited by 95 · see citing works
Fingelkurts, A. A., Fingelkurts, A. A., Bagnato, S., Boccagni, C., & Galardi, G. (2012) · The Open Neuroimaging Journal · doi:10.2174/1874440001206010055 · Cited by 85 · see citing works
Specific and nonspecific thalamocortical functional connectivity in normal and vegetative states
Zhou, J., Liu, X., Song, W., Yang, Y., Zhao, Z., Ling, F., Hudetz, A. G., & Li, S. (2010) · Consciousness and Cognition · doi:10.1016/j.concog.2010.08.003 · Cited by 68 · see citing works
Bruno, M. A., Fernández-Espejo, D., Lehembre, R., Tshibanda, L., Vanhaudenhuyse, A., Gosseries, O., Lommers, E., Napolitani, M., Noirhomme, Q., Boly, M., et al. (2011) · Progress in Brain Research · doi:10.1016/b978-0-444-53839-0.00021-1 · Cited by 59 · see citing works
MRI brain lesion patterns in patients in anoxia-induced vegetative state
Ammermann, H., Kassubek, J., Lotze, M., et al. (2007) · Journal of the Neurological Sciences · doi:10.1016/j.jns.2007.03.026 · Cited by 32 · see citing works
Comment on “Preserved Feedforward But Impaired Top-Down Processes in the Vegetative State”
King, J.-R., Bekinschtein, T. A., & Dehaene, S. (2011) · Science · doi:10.1126/science.1210012 · Cited by 26 · see citing works
Self-citationBoly, M., Garrido, M. I., Gosseries, O., et al. (2011) · Science · doi:10.1126/science.1210240 · Cited by 5 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Neural correlates of consciousness: progress and problems
Koch, C., Massimini, M., Boly, M., & Tononi, G. (2016) · Nature Reviews Neuroscience · doi:10.1038/nrn.2016.22 · Cited by 1,600 · see citing works
From the phenomenology to the mechanisms of consciousness: integrated information theory 3.0
Oizumi, M., Albantakis, L., & Tononi, G. (2014) · PLoS Computational Biology · doi:10.1371/journal.pcbi.1003588 · Cited by 1,128 · see citing works
Consciousness: here, there and everywhere?
Tononi, G., & Koch, C. (2015) · Philosophical Transactions of the Royal Society B: Biological Sciences · doi:10.1098/rstb.2014.0167 · Cited by 811 · see citing works
Signature of consciousness in the dynamics of resting-state brain activity
Barttfeld, P., Uhrig, L., Sitt, J. D., Sigman, M., Jarraya, B., & Dehaene, S. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1418031112 · Cited by 670 · see citing works
Self-citationSitt, J. D., King, J.-R., El Karoui, I., Rohaut, B., Faugeras, F., Gramfort, A., Cohen, L., Sigman, M., Dehaene, S., & Naccache, L. (2014) · Brain · doi:10.1093/brain/awu141 · Cited by 608 · see citing works
Self-citationBoly, M., Massimini, M., Tsuchiya, N., Postle, B. R., Koch, C., & Tononi, G. (2017) · The Journal of Neuroscience · doi:10.1523/jneurosci.3218-16.2017 · Cited by 557 · see citing works
Toward a computational theory of conscious processing
Dehaene, S., Charles, L., King, J.-R., & Marti, S. (2014) · Current Opinion in Neurobiology · doi:10.1016/j.conb.2013.12.005 · Cited by 404 · see citing works
Self-citationRobust EEG-based cross-site and cross-protocol classification of states of consciousness
Engemann, D. A., Raimondo, F., King, J.-R., Rohaut, B., Louppe, G., Faugeras, F., Annen, J., Cassol, H., Gosseries, O., Fernandez-Slezak, D., et al. (2018) · Brain · doi:10.1093/brain/awy251 · Cited by 329 · see citing works
Self-citationChennu, S., Annen, J., Wannez, S., Thibaut, A., Chatelle, C., Cassol, H., Martens, G., Schnakers, C., Gosseries, O., Menon, D., et al. (2017) · Brain · doi:10.1093/brain/awx163 · Cited by 339 · see citing works
Schartner, M., Seth, A., Noirhomme, Q., Boly, M., Bruno, M.-A., Laureys, S., & Barrett, A. (2015) · PLOS ONE · doi:10.1371/journal.pone.0133532 · Cited by 287 · see citing works
“It is possible that utilising a transformation of the continuous signal into a repertoire of ‘symbols’, as in [54], could increase discriminative power.”
BackgroundKey, B. (2016) · Animal Sentience · doi:10.51291/2377-7478.1011 · Cited by 318 · see citing works
Insects have the capacity for subjective experience
Klein, C., & Barron, A. B. (2016) · Animal Sentience · doi:10.51291/2377-7478.1113 · Cited by 243 · see citing works
Consciousness and complexity: a consilience of evidence
Sarasso, S., Casali, A. G., Casarotto, S., Rosanova, M., Sinigaglia, C., & Massimini, M. (2021) · Neuroscience of Consciousness · doi:10.1093/nc/niab023 · Cited by 171 · see citing works
Differential Role of Prefrontal and Parietal Cortices in Controlling Level of Consciousness
Pal, D., Dean, J. G., Liu, T., Li, D., Watson, C. J., Hudetz, A. G., & Mashour, G. A. (2018) · Current Biology · doi:10.1016/j.cub.2018.05.025 · Cited by 177 · see citing works
Cortical activity is more stable when sensory stimuli are consciously perceived
Schurger, A., Sarigiannidis, I., Naccache, L., Sitt, J. D., & Dehaene, S. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1418730112 · Cited by 155 · see citing works
Self-citationBreakdown of the brain’s functional network modularity with awareness
Godwin, D., Barry, R. L., & Marois, R. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1414466112 · Cited by 145 · see citing works
Stender, J., Kupers, R., Rodell, A., Thibaut, A., Chatelle, C., Bruno, M.-A., Gejl, M., Bernard, C., Hustinx, R., Laureys, S., et al. (2015) · Journal of Cerebral Blood Flow & Metabolism · doi:10.1038/jcbfm.2014.169 · Cited by 133 · see citing works
The Problem with Phi: A Critique of Integrated Information Theory
Cerullo, M. A. (2015) · PLOS Computational Biology · doi:10.1371/journal.pcbi.1004286 · Cited by 114 · see citing works
“The first type of research finds correlates of consciousness (in awake patients) using EEG and other measures and then attempts to use these measurements to develop consciousness detectors [17].”
BackgroundUntangling Brain-Wide Dynamics in Consciousness by Cross-Embedding
Tajima, S., Yanagawa, T., Fujii, N., & Toyoizumi, T. (2015) · PLOS Computational Biology · doi:10.1371/journal.pcbi.1004537 · Cited by 76 · see citing works
Unpacking the complexities of consciousness: Theories and reflections
Mudrik, L., Boly, M., Dehaene, S., Fleming, S. M., Lamme, V., Seth, A., & Melloni, L. (2025) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2025.106053 · Cited by 81 · see citing works
Self-citationDottori, M., Sedeño, L., Martorell Caro, M., Alifano, F., Hesse, E., Mikulan, E., García, A. M., Ruiz-Tagle, A., Lillo, P., Slachevsky, A., et al. (2017) · Scientific Reports · doi:10.1038/s41598-017-04204-8 · Cited by 73 · see citing works
Disruption of Conscious Access in Schizophrenia
Berkovitch, L., Dehaene, S., & Gaillard, R. (2017) · Trends in Cognitive Sciences · doi:10.1016/j.tics.2017.08.006 · Cited by 60 · see citing works
Self-citationUncovering Consciousness in Unresponsive ICU Patients: Technical, Medical and Ethical Considerations
Rohaut, B., Eliseyev, A., & Claassen, J. (2019) · Critical Care · doi:10.1186/s13054-019-2370-4 · Cited by 59 · see citing works
Self-citationTürker, B., Musat, E. M., Chabani, E., Fonteix-Galet, A., Maranci, J.-B., Wattiez, N., Pouget, P., Sitt, J., Naccache, L., Arnulf, I., et al. (2023) · Nature Neuroscience · doi:10.1038/s41593-023-01449-7 · Cited by 57 · see citing works
Self-citationLamme, V. (2015) · Theoretical Philosophy/MIND Group – JGU Mainz · doi:10.15502/9783958570092 · Cited by 45 · see citing works
Wong, W., Noreika, V., Móró, L., Revonsuo, A., Windt, J., Valli, K., & Tsuchiya, N. (2020) · Neuroscience of Consciousness · doi:10.1093/nc/niaa006 · Cited by 40 · see citing works
Disruption of conscious access in psychosis is associated with altered structural brain connectivity
Berkovitch, L., Charles, L., Del Cul, A., Hamdani, N., Delavest, M., Sarrazin, S., Mangin, J.-F., Guevara, P., Ji, E., d'Albis, M.-A., et al. (2021) · The Journal of Neuroscience · doi:10.1523/jneurosci.0945-20.2020 · Cited by 36 · see citing works
Self-citationMeasuring the Complexity of Consciousness
Arsiwalla, X. D., & Verschure, P. (2018) · Frontiers in Neuroscience · doi:10.3389/fnins.2018.00424 · Cited by 35 · see citing works
Evers, K., Farisco, M., & Pennartz, C. M. A. (2024) · Consciousness and Cognition · doi:10.1016/j.concog.2024.103668 · Cited by 22 · see citing works
- Authors
- King, J.-R., Sitt, J. D., Faugeras, F., Rohaut, B., El Karoui, I., Cohen, L., Naccache, L., & Dehaene, S.
- Affiliations
- Inserm (FR)
- Corresponding author
- King, Jean-Rémi
- Sitt, Jacobo D.
- ORCID
- Venue
- Current Biology
- Publisher
- Elsevier BV
- Published
- 2013-10
- Volume
- 23
- Issue
- 19
- Pages
- 1914-1919
- ISSN
- 0960-9822 (ISSN-L)
- PMC
- PMC5635964
- OpenAlex
- W1972724226
- Cited by
- 370
- References
- 46
- Citations by year
- 2026: 21 · 2025: 26 · 2024: 30 · 2023: 40 · 2022: 34 · 2021: 26 · 2020: 32 · 2019: 54 · 2018: 26 · 2017: 30 · 2016: 14 · 2015: 25 · 2014: 11 · 2013: 1
- FWCI
- 12.27
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Current Biology (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- HAL (submittedVersion)
- Topics
- Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
- Keywords
- consciousness, information sharing, vegetative state, minimally conscious state, coma recovery, EEG, distributed consciousness
- MeSH terms
- Adult, Brain, Brain Mapping, Coma, Consciousness, Electroencephalography, Female, Humans, Male, Middle Aged, Wakefulness, Persistent Vegetative State
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