Cited by 503Neural dynamics and brain functionEEG and Brain-Computer InterfacesVisual perception and processing mechanisms

Guiding the study of brain dynamics by using first-person data: Synchrony patterns correlate with ongoing conscious states during a simple visual task

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Lutz, Antoine, Lachaux, Jean-Philippe, Martinerie, Jacques, Varela, Francisco J.·2002·Proceedings of the National Academy of Sciences

Abstract

Even during well-calibrated cognitive tasks, successive brain responses to repeated identical stimulations are highly variable. The source of this variability is believed to reside mainly in fluctuations of the subject's cognitive "context" defined by his/her attentive state, spontaneous thought process, strategy to carry out the task, and so on... As these factors are hard to manipulate precisely, they are usually not controlled, and the variability is discarded by averaging techniques. We combined first-person data and the analysis of neural processes to reduce such noise. We presented the subjects with a three-dimensional illusion and recorded their electrical brain activity and their own report about their cognitive context. Trials were clustered according to these first-person data, and separate dynamical analyses were conducted for each cluster. We found that (i) characteristic patterns of endogenous synchrony appeared in frontal electrodes before stimulation. These patterns depended on the degree of preparation and the immediacy of perception as verbally reported. (ii) These patterns were stable for several recordings. (iii) Preparatory states modulate both the behavioral performance and the evoked and induced synchronous patterns that follow. (iv) These results indicated that first-person data can be used to detect and interpret neural processes.

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  • Neural synchrony correlates with conscious perception in humans.

    “Many subsequent studies demonstrated that neural synchrony also correlates with conscious perception in humans.For example, neural synchrony patterns were found to correlate with conscious recognition by subjects exposed to optical illusions [16], and conscious auditory perception was shown to be correlated with long-range synchrony of gamma oscillations [17].”

    From The electromagnetic will (2021) · cites this paper as [16]

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2 of the 31 references couldn’t be matched to a known paper.

Research works printed but not linked: 4

  1. [23]Wallace, A. (1999) in The View from Within , eds. Varela, F. & Shear, J. (Imprint Academic, London), pp. 175-187.
  2. [24]Ericsson, K. A. & Simon, H. A. (1993) Protocol Analysis, Verbal Protocols as Sata (MIT Press, Cambridge, U.K.).
  3. [27]Kantz, H. & Schreiber, T. (1997) in Non-Linear Series Analysis (Cambridge Univ. Press, Cambridge, U.K.).
  4. [28]Dehaene S., Kerszberg M. & Changeux, J. P. (1998) Proc. Natl. Acad. Sci. USA 95, 14529-14534.

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Authors
Lutz, A., Lachaux, J.-P., Martinerie, J., & Varela, F. J.
Affiliations
  • Laboratoire de Neurosciences Cognitives et Imagerie Cérébrale (LENA), Hôpital de La Salpêtrière, Centre National de la Recherche Scientifique (CNRS), UPR 640, 75651 Paris Cedex 13, France
  • Centre National de la Recherche Scientifique (FR)
Venue
Proceedings of the National Academy of Sciences
Published
2002-01-22
Volume
99
Issue
3
Pages
1586-1591
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2095832584
Cited by
503
References
31
Citations by year
2026: 10 · 2025: 14 · 2024: 7 · 2023: 15 · 2022: 25 · 2021: 19 · 2020: 33 · 2019: 21 · 2018: 24 · 2017: 32 · 2016: 12 · 2015: 21 · 2014: 24 · 2013: 34 · 2012: 18
FWCI
9.85
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
Keywords
neuronal synchronization, brain dynamics, states of consciousness, cognitive context, neural variability, frontal electrodes
MeSH terms
Adult, Analysis of Variance, Attention, Brain, Cognition, Consciousness, Electroencephalography, Humans, Male, Middle Aged, Neurons, Pattern Recognition, Visual, Reaction Time, Reproducibility of Results

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