A framework for consciousness — TEI-tagged view

Crick, Koch · 2003 · theoretical-neuroscience · doi:10.1038/nn0203-119 · full text at the source · TEI xml · tagged edition · index · concepts · authors
Where this record's text came from. faceted 2026-08 by reading the locally held text (pdftext); every evidence string verified as an exact substring of that text before merging. method is recorded as 'theoretical-framework' rather than any of the listed values: the paper is a Nature Neuroscience commentary that reports no new data and explicitly denies being a hypothesis set, so 'review' would misdescribe it. The PDF extraction carries heavy running-header noise (vertically-set journal URL characters interleaved between pages) and the file ends mid-sentence in the 'Related ideas' section ('For an extensive'), so the closing paragraphs and reference list are absent; all quotes above were taken from clean, unbroken passages in the body. The third claim_relation is a self-contradiction — the authors retract their own earlier sufficiency claim about 40 Hz synchrony — which 'contradicts' captures better than 'extends'. faceted 2026-08-14 and 2026-08-15 schema-0.3 passes: every quote verified as an exact substring of the staged text and anchored at merge time; concept terms verified present; every edge endpoint an existing node.
Other fields define these differently the same word, defined another way in another discipline
qualia 2 fields · binding 2 fields · framework 2 fields
Tags on this paper every tag the record carries, whether or not the words occur in the text below — a number is how many papers in the corpus carry that tag; a tag with no number is unique to this paper
framework4 qualia5 NCC5 theory24
Method, as described: theoretical-framework

Our tag layer for this paper

Cross-disciplinary analysis
content-tags & facets: phenomenon · claim-type · cross-domain-transfer · mechanism · claim-relation · replication-status · limitation — grounded in the full text
phenomenonneural correlates of visual consciousness— “In round terms, the NCC is the minimal set of neuronal events that gives rise to a specific aspect of a conscious percept.”
claim-typemechanism— “This framework offers a coherent scheme for explaining the neural correlates of (visual) consciousness in terms of competing cellular assemblies.”
method — evidence— “A framework is not a detailed hypothesis or set of hypotheses; rather, it is a suggested point of view for an attack on a scientific problem, often suggesting testable hypotheses.”
transferfrom politics / electoral competition: The structure of a democratic election — primaries, a winning party that stays in power and shapes later events, and opinion polls — is imported as an explicit working model of how transient neuronal coalitions compete and how one comes to dominate and constitute the conscious percept.— “The winning coalition associated with an object or event would correspond to the winning party, which would remain in power for some time and would attempt to influence and control future events.”transfers[0]
mechanismAttention makes an object conscious by biasing the competition between rival neuronal coalitions while those coalitions are still forming, rather than by acting on an already-formed percept.— “Attention probably acts by biasing the competition among rival coalitions, especially during their formation24.”mechanisms[0]
mechanismPositive feedback loops iteratively re-excite a neuron, driving its activity past the consciousness threshold and then holding it there for the duration of a snapshot.— “Positive feedback loops could, by iteratively exciting the neuron, push its activity increasingly upward so that the activity not only reaches above some critical threshold, but is maintained there for some time.”mechanisms[1]
mechanismFeature detectors are built by neurons detecting recurring correlations in their inputs and modifying their synapses so those inputs drive them more easily — the brain is thereby detecting apparent causation.— “A broad answer is that neurons do this by detecting common and significant correlations in their inputs and by altering their synapses (and perhaps other properties) so that they can more easily respond to such inputs.”mechanisms[2]
mechanismBecause motion is coded as a constant firing rate held fixed within one snapshot, a change of motion has no explicit representation, which is why acceleration is hard to perceive.— “It is not surprising, then, that if the eyes do not move in smooth pursuit, the brain is very poor at recognizing acceleration even though it is good at distinguishing movements36.”mechanisms[3]
builds-on Hebb's cell-assembly idea— “‘Coalitions’ implies ‘assemblies’—an idea which goes back at least to Hebb22—plus competition among them (see also ref. 23).”claim_relations[0]
extends Crick & Koch's own 1990 paper, 1995 proposal and 1998 review— “Many of our basic ideas on consciousness, such as the importance of attention and correlated firing, were outlined in our 1990 paper11, and in 1995, we suggested a plausible function for consciousness12 and later updated our ideas in a 1998 review3.”claim_relations[1]
contradicts the authors' own earlier claim (1990 paper, ref. 11) that synchronized 40 Hz firing is sufficient for the NCC— “We no longer think11 that synchronized firing, such as the so-called 40 Hz oscillations, is a sufficient condition for the NCC.”claim_relations[2]
senseframework - explicitly NOT a hypothesis or set of hypotheses, but a suggested point of view for attacking a problem, which may suggest testable hypotheses— “A framework is not a detailed hypothesis or set of hypotheses; rather, it is a suggested point of view for an attack on a scientific problem, often suggesting testable hypotheses.”senses[0]
senseneural correlate of consciousness - the minimal set of neuronal events giving rise to one specific aspect of a conscious percept— “In round terms, the NCC is the minimal set of neuronal events that gives rise to a specific aspect of a conscious percept.”senses[1]
senseprivate - a stipulated sense: accessible exclusively to the owner of the brain, so the percept itself cannot be conveyed even though information about it can— “we mean that it is accessible exclusively to the owner of the brain; it is impossible for me to convey to you the exact nature of my conscious percept of the color red, though I can convey information about it, such as whether two shades of red appear to me to be the same or different.”senses[2]
auditEVIDENCE CORRECTED (RE-GROUNDED) · qualia —contrasted-with→ NCC — Audit 2026-09-28: DOUBTFUL - read against its span and kept, but the span sets the search for NCC against explaining qualia directly; contrasted-with is loose.— “Instead, we are attempting to find the neural correlate(s) of consciousness (NCC), in the hope that when we can explain the NCC in causal terms, this will make the problem of qualia clearer3.”concept_edges[0]
retractedEVIDENCE CORRECTED (RE-GROUNDED) · qualia —contrasted-with→ NCC — RE-GROUNDED. The old span was about the difficulty of explaining redness. This sentence names both and states the programme's own substitution - '…correlate(s) of consciousness (NCC), in the hope that when…'.— “Instead, we are attempting to find the neural correlate(s) of consciousness (NCC), in the hope that when we can explain the NCC in causal terms, this will make the problem of qualia clearer3.”— “No one has produced any plausible explanation as to how”concept_edges[0]
for which uselimitation — the scope of the framework: WE HAVE CONCENTRATED ON THE VISUAL SYSTEM OF PRIMATES, LEAVING ON ONE SIDE SOME OF THE MORE DIFFICULT ASPECTS OF CONSCIOUSNESS, SUCH AS EMOTION AND SELF-CONSCIOUSNESS— “As a matter of tactics, we have concentrated on the visual system of primates, leaving on one side some of the more difficult aspects of…limitations[0]
for which uselimitation — the anatomical completeness of the framework: the authors ACKNOWLEDGE SOME RELEVANT ASPECTS OF THE BRAIN THAT HAVE BEEN LEFT OUTlimitations[1]
for which uselimitation — the originality claim, precisely: MOST OF THE IDEAS WE FAVOR HAVE BEEN SUGGESTED BEFORE, BUT THEIR COMBINATION IS ORIGINAL - the claim is on the combination, not the componentslimitations[2]
for which uselimitation — this framework as an account of qualia: the authors state it is fruitless to approach that problem head-on and substitute the search for neural correlates
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
limitations[3]
for which uselimitation — this framework as a law-like account: the authors state biological systems do not have rigid laws and that evolution produces mechanisms with exceptions
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
limitations[4]
replicationuntested
limitationThe framework is deliberately restricted to primate vision and sets aside emotion and self-consciousness.
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limitations[0]
limitationThe authors acknowledge that relevant parts of the brain are omitted from the framework.
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limitations[1]
limitationThe individual ideas are not new; only their combination is claimed as original.
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
limitations[2]
limitationThe hard problem is declared unapproachable head-on and replaced with a different, tractable target.
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limitations[3]
limitationBiological frameworks are said to differ in kind from those in physics, because biology has few rules without exceptions.
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limitations[4]
Content tags
content-observations: finding · quantity · variable · definition · key-term — grounded in the full text
findingThe framework's central claim is that the coalition of mutually supporting neurons that wins the ongoing competition at a given moment is what the subject is conscious of.
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content_tags.findings[0]
findingThe authors retract their earlier position that synchronized firing, in particular 40 Hz oscillations, is sufficient for the NCC.
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content_tags.findings[1]
findingAn explicit representation of a feature is necessary for that feature to become conscious but is not on its own sufficient to produce the NCC.
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content_tags.findings[2]
findingConsciousness of a visual scene is claimed to begin at the top of the hierarchy with the gist of the scene, with the details filled in afterwards as activity descends to lower levels.
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content_tags.findings[3]
findingThe binding of an object's features is simply their membership in one coalition.
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content_tags.findings[4]
findingThe penumbra — the neurons influenced by, but not part of, the NCC — is proposed as the substrate of unconscious priming.
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content_tags.findings[5]
findingNo recorded case of purely parietal damage led to a complete loss of conscious vision.
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content_tags.findings[6]
findingThe sensory cortex's job is described as building and using highly specific but multidimensional feature detectors, for properties such as orientation, motion and faces.
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content_tags.findings[7]
quantity40 Hz — the synchronized-firing frequency the authors previously proposed, and now reject, as sufficient for the NCC
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content_tags.quantities[0]
quantityten — number of headings under which the framework's ingredients are set out
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content_tags.quantities[1]
definitionNCC
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content_tags.definitions[0]
definitionframework
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content_tags.definitions[1]
definitionprivate
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content_tags.definitions[2]
definitionprojective field
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content_tags.definitions[3]
definitionexplicit representation
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content_tags.definitions[4]
definitionessential node
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content_tags.definitions[5]
definitionzombie modes
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content_tags.definitions[6]
definitionnet-wave
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content_tags.definitions[7]
definitioncoalitions of neurons
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content_tags.definitions[8]
definitionsnapshots
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content_tags.definitions[9]
definitionbinding
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content_tags.definitions[10]
definitionpenumbra
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content_tags.definitions[11]
Concepts
terms this paper carries, each with the sentence it was cut from — the layer that joins one paper to another. Terms with no quote yet are on CONCEPTS.html.
conceptframework
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concepts[0]
conceptqualia
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concepts[1]
conceptNCC
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concepts[2]

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