Experimental and Theoretical Approaches to Conscious Processing

Dehaene, Changeux · Neuron · 2011 · neuroscience · 10.1016/j.neuron.2011.03.018 · record dehaene2011-experimental-and-theoretical-appro
tag layer · index · concepts · authors · עברית
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. Claim type is 'mechanism' rather than 'review' because the facet asks for the SHAPE of the contribution: the paper argues conscious access happens BECAUSE of global ignition/broadcasting; 'review' is captured in method. Many further self-relations exist (to Baars 1989, to the authors' own earlier simulations) but the sentences that state them do not name the prior work in the same sentence, so they were left out under the naming rule. 2026-08-14 and 2026-08-26 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.
This record’s own method is review, and the tags below follow from that. A review’s findings, quantities and statistics are things stated IN this paper, and some of them report results obtained elsewhere. No tag on this page names a different author. Measured across every review in this corpus, 81% of a review’s tags carry no citation at all — most of them are the review speaking. The corpus does not adjudicate the rest: read an unmarked tag as a claim this paper makes, not necessarily one it made first.
How to read this page. The article itself is not reproduced here — this paper is not cleared for redistribution, so what follows is the tag layer alone. The evidence sentences are withheld with the article. The table at the foot lists every tag the record carries; each row names the facet it belongs to, and the whose words column says whether the tag records the paper's own wording or the tagger's sentence about the paper. Every tag links to each other paper in the corpus carrying it. The machine-readable edition of the same thing is the TEI file beside this one, where the tags live in standOff, and the article is at its publisher via the link below. When we have changed our mind. Some entries in the table begin with a word in capitals and the reason for it. EVIDENCE CORRECTED — the finding still stands, but we had quoted the wrong sentence from the paper, and the quotation has been replaced with the right one. RETRACTED — the entry itself was wrong; it stays on the page, marked, with the reason, rather than being deleted. WITHDRAWN AND REPLACED — the entry was wrong, and a corrected version of it appears in the entries below. Each mark carries its own reason, in brackets, because the reasons differ from one entry to the next. An entry we have WITHDRAWN is removed from this page and kept in the record, with its reason. A line reading Audit and a date is a later re-reading of the entry against its whole sentence: DOUBTFUL means it was kept, and the reason says what is loose about it. Quotation marks inside the tagger's sentence. Where a tag is the tagger's own sentence, a phrase in quotation marks inside it is borrowed from the paper — the tagger's wording around it is not. The paper's own sentence is the evidence quote for that row; on this page it is withheld with the article, and the article is at its publisher. Nothing inside quotation marks anywhere on this page is ours: if it is quoted, it is the paper's. Whose words a concept carries. A concept entry records a term the paper itself uses, so the term, the sense given for it, and its evidence are the paper's own words, quoted where the paper fixes them. This is the opposite of a sense entry in the tag table, which is the tagger's sentence about how the paper uses a term. Where a concept entry could not be grounded in the paper's words, the entry says so on its own row.
Other fields define these differently the same word, defined another way in another discipline
attention 36 fields · masking 2 fields · selective attention 2 fields · wakefulness 2 fields

Tags on this paper

Every tag the record carries, each linking to every other paper in the corpus that carries it. A tag appears here whether or not its words occur in the article — the spans below are only the ones a sentence in this paper licenses. Of the 8 concept tags on this paper, all 8 are grounded in a quoted sentence. 5 carry the tagger's gloss of what the term means in this paper, which is not something the article can license.
conscious access attention post-decision wagering state of consciousness wakefulness vigilance selective attention conscious content incoming activity that exceeds a dynamical threshold ignites a self-supporting reverberating cell assembly which sustains the conscious content and broadcasts it to distant sites global broadcasting frees information from encapsulated circuits and makes it available to many processors, including the ones that formulate verbal reports, which is why conscious information is reportable during ignition the workspace is mobilised as a whole, with the non-selected neurons actively inhibited, which blocks a second simultaneous ignition and produces the serial bottleneck spontaneous prestimulus fluctuations barely affect the fast feedforward stage but strongly bias the slow NMDA-based reverberating stage, so an identical stimulus ignites on some trials and not others, producing all-or-none perception a weak stimulus produces a feedforward wave that cannot recruit enough self-sustaining reverberation, so it dies out before the late global activation and stays subliminal because far more workspace neurons are laterally inhibited than activated, the summed scalp signal during ignition is net positive, which is why conscious access shows up as the positive P3b subliminal stimulus preconscious stimulus masking subliminal priming attentional blink Global Neuronal Workspace ignition information integration MMN response requirements Granger causality Granger causality, a statistical technique that measures whether the time course of signals at one site can forecast the future evolution of signals at another distant site correlation (coefficient of determination) sensitivity and specificity independent component analysis independent component analysis of fMRI data review

Legend

relation to other workclaim_relationshow this paper stands to another: agrees, contradicts, extends, qualifies
claim typeclaim_typethe shape of the claim: existence, mechanism, method, critique, prediction, null
concept edgeconcept_edgesan asserted relation between two concepts, with the sentence asserting it
conceptconceptsan idea the paper works with, quoted where the paper uses it
content tagcontent_tagsa finding, definition, quantity, statistic or variable named in the paper
limitationlimitationswhat the paper says its evidence cannot support
mechanismmechanismshow the reported effect is said to come about
methodmethodhow the paper produced its evidence
phenomenonphenomenonthe effect or regularity under study
sensesensesa distinct use of a term, quoted where the paper fixes it
transfertransfersa method or concept carried in from another field

The paper

The full text is not reproduced here. This article is not cleared for redistribution, so the page carries the tag layer only. Its evidence sentences are withheld; the grounding status remains with each tag, and the article itself is at https://doi.org/10.1016/j.neuron.2011.03.018. The reading view exists for the papers whose licence permits it.

Every tag on this page

claim_relations 2 · claim_type 1 · concept_edges 4 · concepts 8 · content_tags 40 · limitations 7 · mechanisms 6 · method 1 · phenomenon 1 · senses 5 · transfers 2

Relations on this page carry a quotation for the claim. Where a relation was separately evidenced — and so tested against the vocabulary for its type — the row says so; none of 4 relations here carry that mark. The rest are the tagger’s reading of the sentence quoted beside them.

This record holds no controls. A layer is empty when the tagger recorded nothing in it — which is not the same as the paper having nothing to record.

facettagfieldconf.whose words
claim_typemechanism
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claim_typethe paper's words
phenomenonconscious access
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phenomenonthe paper's words
methodreview
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also in: review
methodthe paper's words
mechanismsmechanisms
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mechanisms[0]the tagger's words
mechanismsmechanisms
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mechanisms[1]the tagger's words
mechanismsmechanisms
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mechanisms[2]the tagger's words
mechanismsmechanisms
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mechanisms[3]the tagger's words
mechanismsmechanisms
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mechanisms[4]the tagger's words
mechanismsmechanisms
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status: the paper's own words: can explain why
mechanisms[5]the tagger's words
limitationsThe review deliberately covers only conscious access, not higher-order concepts of consciousness
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limitations[0]the tagger's words
limitationsHigher-order concepts such as metacognition and self-representation are excluded because the authors judge them insufficiently defined empirically
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limitations[1]the tagger's words
limitationsThe supporting simulations implement only a small fragment of the proposed architecture
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limitations[2]the tagger's words
limitationsLesion and TMS evidence does not establish that prefrontal contribution is causally necessary for conscious perception
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limitations[3]the tagger's words
limitationsThe field's strict operational criterion is stated to OVERESTIMATE the thing it measures: subjects perform above chance while denying they perceived anything.
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what this limits: a chance-level performance criterion as the test of non-conscious processing: the review states it tends to overestimate conscious perception, because subjects can perform above chance and still deny perceiving the stimulus
limitations[4]1.0the tagger's words
limitationsWhich task counts as evidence is unresolved, because performance can be at chance on one task and not another.
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what this limits: a null result on one task as evidence of non-conscious processing: the review states performance can be at chance for some tasks but not others, leaving which tasks count unresolved
limitations[5]1.0the tagger's words
limitationsThe verdict rests on accepting a null hypothesis, and the review states the significance often depends on an analyst's choice of how many trials to run.
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what this limits: any published claim that a stimulus was processed non-consciously: the review states performance never really falls to zero and that significance often depends on arbitrary choices such as the number of trials used to measure it
limitations[6]1.0the tagger's words
transfersthe concept of a stochastic phase transition, used to describe the sudden switch of the network into the ignited conscious state
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transfers[0]the tagger's words
transfersthe blackboard architecture - a shared data structure updated by many specialised modules - taken over as the global workspace of consciousness
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transfers[1]the tagger's words
conceptsconscious access
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concepts[0]the paper's words
conceptsattention
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also in: attention
concepts[1]the paper's words
conceptspost-decision wagering
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concepts[2]the paper's words
conceptsstate of consciousness
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concepts[3]0.95the paper's words
conceptswakefulness
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also in: wakefulness
concepts[4]0.9the paper's words
conceptsvigilance
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also in: vigilance
concepts[5]0.9the paper's words
conceptsselective attention
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concepts[6]0.95the paper's words
conceptsconscious content
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concepts[7]0.9the paper's words
sensesconscious access - BY THE OBJECTIVE CRITERION: a stimulus counts as non-conscious only if subjects cannot perform above chance on a direct task, a tradition grounded in signal-detection theory
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senses[0]1.0the tagger's words
sensesconscious access - BY SUBJECTIVE CRITERIA: visibility ratings, or second-order commentaries such as post-decision wagering, adopted BECAUSE the objective criterion fails
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senses[1]1.0the tagger's words
sensesattention - James's classic definition, which the review says CONFLATES two processes that are now clearly separable
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senses[2]1.0the tagger's words
senses`conscious` - ONE WORD SPLIT BY GRAMMAR, NOT BY FIELD OR BY DATE. `“Conscious” is an ambiguous word. In its intransitive use (e.g. "the patient was still conscious"), it refers to the state of consciousness ... In its transitive use (e.g. "I was not conscious of the red light"), it refers to conscious access.` The disambiguating test is whether the word takes an object. Every other split in this corpus runs across disciplines, across decades, or across languages; this one runs across a syntactic frame, and the paper hands the reader a grammatical test rather than a definition.
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senses[3]0.95the tagger's words
senses`selection` / `selective attention` - AN ALIAS INTRODUCED IN PASSING AND THEN USED TO BREAK A FOLK IDENTITY. `Selection, also called selective attention, refers to the separation of relevant versus irrelevant information`, and the paper immediately reports that `selection can occur without conscious processing`. The naming matters because the everyday word `attention` carries the implication that attending is being aware, and the paper is dismantling exactly that.
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senses[4]0.9the tagger's words
claim_relationsbuilds-on → Crick and Koch (1990) programme on the neural correlates of consciousness
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claim_relations[0]the tagger's words
claim_relationsbuilds-on → Dehaene et al. (1998a) global neuronal workspace architecture
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claim_relations[1]the tagger's words
concept_edgesconscious access —distinct-from→ attention
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strength of the relation: 1
concept_edges[0]the tagger's words
concept_edgesstate of consciousness —same-as→ wakefulness
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strength of the relation: 1 · note: 'also called' - an explicit alias, both names in the one span.
concept_edges[1]0.9the tagger's words
concept_edgesstate of consciousness —same-as→ vigilance
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strength of the relation: 1 · note: Same 'also called' list. Confidence 0.85 rather than 0.9 because the paper then uses 'vigilance' as a POINT ON the scale ('full vigilance') as well as a name FOR the scale.
concept_edges[2]0.85the tagger's words
concept_edgesselective attention —distinct-from→ conscious access
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strength of the relation: 1 · note: A DISSOCIATION, and the strongest form of distinctness the paper offers: 'selection can occur without conscious processing'. This is an empirical claim, not a definitional stipulation, which is why it is evidenced by the dissociation sentence and not by the definition. Audit 2026-09-28: DOUBTFUL - read against its full span and kept, but the span writes 'selection can occur without conscious processing', not 'selective attention' vs 'conscious access'.
concept_edges[3]0.95the tagger's words
content_tagsGranger causality
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content_tags.statistics[0]the tagger's words
content_tagscorrelation (coefficient of determination)
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content_tags.statistics[1]the tagger's words
content_tagssensitivity and specificity
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content_tags.statistics[2]the tagger's words
content_tagsindependent component analysis
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content_tags.statistics[3]the tagger's words
content_tagsAcross many paradigms, conscious access is marked by three convergent physiological signatures: late amplification of the relevant sensory activity, long-distance cortico-cortical synchronisation in the beta and gamma bands, and ignition of a large-scale prefronto-parietal network.
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content_tags.findings[0]the tagger's words
content_tagsSubliminal influence shrinks as processing depth increases, leaving only small effects at high-level cognitive and decision stages.
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content_tags.findings[1]the tagger's words
content_tagsSubliminal priming decays with time and is typically undetectable beyond about 500 ms.
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content_tags.findings[2]the tagger's words
content_tagsSubliminal stimuli do not produce durable or flexible changes in executive control.
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content_tags.findings[3]the tagger's words
content_tagsThe first 200 ms of visual processing can be fully preserved on trials where subjects deny seeing the stimulus.
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content_tags.findings[4]the tagger's words
content_tagsThe most consistent ERP correlate of visibility is a late (~300-500 ms), broadly distributed positive component, the P3 or P3b.
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content_tags.findings[5]the tagger's words
content_tagsThe proportion of neurons following the reported percept rose from about 20% in V1/V2 to 40% in V4/MT/MST and up to 90% in IT and STS.
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content_tags.findings[6]the tagger's words
content_tagsConscious words modulated late activity at 68.8% of intracranial electrode sites versus 24.4% for non-conscious words, showing that conscious access has a brain-wide impact.
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content_tags.findings[7]the tagger's words
content_tagsTranscranial magnetic stimulation over parietal or prefrontal cortex, far from visual areas, can block conscious perception and even make a fixated stimulus subjectively disappear.
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content_tags.findings[8]the tagger's words
content_tagsPatients with focal prefrontal lesions needed stronger stimuli to see a masked target, in proportion to how far the lesion extended into left anterior prefrontal cortex, while their subliminal performance stayed normal.
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content_tags.findings[9]the tagger's words
content_tagsMS patients needed a longer target-mask delay before a masked stimulus became conscious.
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content_tags.findings[10]the tagger's words
content_tagsThe GNW model predicts, and simulations reproduce, strict seriality of conscious access.
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content_tags.findings[11]the tagger's words
content_tagsOnly conscious no-go signals triggered broad anterior activation into anterior cingulate, inferior and middle frontal gyrus, dorsolateral prefrontal and inferior parietal cortex.
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content_tags.findings[12]the tagger's words
content_tagsSchizophrenic patients show impaired neural signatures of conscious access while their subliminal processing remains normal.
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content_tags.findings[13]the tagger's words
content_tagsThe review's inventory of empirical markers of conscious access is: all-or-none prefronto-parietal ignition, all-or-none amplification of sensory activation, a late global P3b, late broad-band gamma power increase, enhanced long-distance beta-band phase synchronisation, and enhanced causal coupling between distant areas including a top-down component.
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content_tags.findings[14]the tagger's words
content_tagsconscious access
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content_tags.definitions[0]the tagger's words
content_tagssubliminal stimulus
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content_tags.definitions[1]the tagger's words
content_tagspreconscious stimulus
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content_tags.definitions[2]the tagger's words
content_tagsmasking
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also in: masking
content_tags.definitions[3]the tagger's words
content_tagssubliminal priming
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content_tags.definitions[4]the tagger's words
content_tagsattentional blink
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content_tags.definitions[5]the tagger's words
content_tagsselective attention
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content_tags.definitions[6]the tagger's words
content_tagsGlobal Neuronal Workspace
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content_tags.definitions[7]the tagger's words
content_tagsignition
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also in: ignition
content_tags.definitions[8]the tagger's words
content_tagsinformation integration
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content_tags.definitions[9]the tagger's words
content_tagsMMN
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also in: MMN
content_tags.definitions[10]the tagger's words
content_tagsattention
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also in: attention
content_tags.variables[2]the tagger's words
content_tagsresponse requirements
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content_tags.variables[3]the tagger's words
content_tags68.8% / 24.4% — share of intracranial electrode sites whose late activity was modulated by conscious words versus by non-conscious words
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content_tags.quantities[0]the tagger's words
content_tags20% / 40% / 90% — proportion of recorded neurons whose firing followed the consciously perceived image during binocular rivalry, in V1-V2, in V4/MT/MST, and in IT/STS respectively
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content_tags.quantities[1]the tagger's words
content_tagsr²=0.96 — agreement across subjects between conscious perception thresholds estimated from objective performance and from subjective report in visual masking
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content_tags.quantities[2]the tagger's words
content_tags86% sensitivity and 97% specificity — accuracy of predicting non-recovery one year after traumatic coma from diffusion tensor and spectroscopic measures of white-matter integrity
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content_tags.quantities[3]the tagger's words
content_tags16 times — how many more dendritic spines layer-III pyramidal neurons carry in prefrontal cortex than in V1, cited as morphological support for long-distance integration
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content_tags.quantities[4]the tagger's words
content_tags~50% — the level to which global cerebral metabolic activity typically falls in coma and vegetative state relative to normal
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content_tags.quantities[5]the tagger's words
content_tags500 ms — elapsed time after which subliminal priming typically ceases to be detectable
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content_tags.quantities[6]the tagger's words
content_tags~300-500 ms — latency of the P3/P3b component identified as the most consistent ERP correlate of stimulus visibility
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content_tags.quantities[7]the tagger's words

Interpretive choices

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