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

The DOI matches its Crossref record; 29 of the 31 references it cites were found in a registry or an index.

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

Open access
Lutz, Antoine, Lachaux, Jean-Philippe, Martinerie, Jacques, Varela, Francisco J.·2002·Proceedings of the National Academy of Sciences
DOI 10.1073/pnas.032658199PMC PMC122234
Open this paper in CoChat — free account

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.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.032658199

Cites

29 of 29 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Flagged first, then by citations

Show all 31 references

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

Research works printed but not linked: 7

  1. F Varela J Consc Studies 3, 330–350 (1996).
  2. P Vermersch The View from Within, eds F Varela, J Shear (Imprint Academic, London), pp. 17–42 (1999).
  3. J P Lachaux, E Rodriguez, M Le Van Quyen, A Lutz, J Martinerie, F J Varela Int J Bifurc Chaos 12, 2608–2622 (2000).
  4. N Depraz The View from Within, eds F Varela, J Shear (Imprint Academic, London), pp. 95–110 (1999).
  5. A Wallace The View from Within, eds F Varela, J Shear (Imprint Academic, London), pp. 175–187 (1999).
  6. H Kantz, T Schreiber Non-Linear Series Analysis (Cambridge Univ. Press, Cambridge, U.K., 1997).
  7. F Varela J Consc Studies 6, 111–140 (1999).

Cited by

Sorted by citations

Items 101–200 of 500

Related

See all

Metadata

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)
ORCID
Venue
Proceedings of the National Academy of Sciences
Publisher
National Academy of Sciences
Published
2002-01-22
Volume
99
Issue
3
Pages
1586-1591
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
DOI
10.1073/pnas.032658199
PMC
PMC122234
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

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review