phenomenon · claim-type · cross-domain-transfer · mechanism · claim-relation · replication-status · limitation — grounded in the full text| phenomenon | repetition priming and repetition suppression— “Stimulus repetition in identification tasks leads to improved behavioral performance ("repetition priming") but attenuated neural responses ("repetition suppression") throughout task-engaged cortical regions.” | |
| claim-type | mechanism— “In this Discussion Paper, we review four different theoretical proposals that have the potential to link repetition suppression and priming, with a particular focus on a proposal that stimulus repetition affects improved efficiency through enhanced neural synchronization.” | |
| method — evidence | — “Below, we review four of the main theoretical proposals about what form these solutions might take (see also Grill-Spector et al., 2006 ).” | |
| mechanism | Repetition makes task-engaged cells fire more synchronously even as their average rates fall, so processing becomes more efficient and behaviour improves despite reduced activity.— “A very different proposal that may help to resolve this puzzle is that as cells are firing at lower overall rates, they are firing more synchronously with one another, leading to more efficient neural processing ( Gilbert, Gotts, Carver, & Martin, 2010 ; Gotts, 2003 ) ( Figure 1C ).” | mechanisms[0] |
| mechanism | Coincident input spikes sum on the receiving cell's membrane before the depolarization decays, so synchronous inputs cross spike threshold more reliably than the same number of asynchronous inputs.— “Small depolarizations that occur simultaneously (i.e. synchronously) in a receiving cell will be much more likely to sum above the voltage threshold needed to evoke an action potential.” | mechanisms[1] |
| mechanism | In the Bayesian alternative, learned top-down predictions inhibit the bottom-up sensory evidence, so the residual prediction error - and hence the measured activity - shrinks with repetition.— “This process is commonly referred to in the literature on Bayesian networks as "explaining away" (e.g. Pearl, 1988 ), since as the appropriate causes of the sensory evidence are learned, the incorrect causes (i.e. prediction error) are reduced and explained away.” | mechanisms[2] |
| contradicts | the Facilitation model (Henson, 2003; James et al., 2000)— “Having reviewed four basic proposals as to how repetition suppression might afford repetition priming, the only view that we consider definitively ruled out by current data is the Facilitation Model, at least in its existing form.” | claim_relations[0] |
| replicates | Gilbert et al. (2010)— “We found that stimulus repetition led to repetition priming in both patients and increases in low-frequency evoked power (1–15 Hz) for virtually all task-engaged electrodes (i.e. those that exhibited significant evoked responses), replicating the basic pattern of Gilbert et al. (2010) .” | claim_relations[1] |
| builds-on | Gotts (2003) neocortical circuit model— “In a simplified neocortical circuit model that incorporated biologically proportionate numbers of excitatory and inhibitory cells and short-term plasticity mechanisms, Gotts (2003) showed that it was possible to simultaneously address short-lag repetition suppression and priming effects through enhanced synchronization.” | claim_relations[2] |
| sense | THE PARADOX IN ONE SENTENCE, and it is a SIGN CONFLICT between two measures of one event: `Stimulus repetition in identification tasks leads to IMPROVED behavioral performance (repetition priming) but ATTENUATED neural responses (repetition suppression).` Behaviour gets better while the brain does less. Every mechanism in this paper exists to make those two facts one fact, and a corpus that recorded only `repetition improves performance` would lose the half that makes it interesting— “Stimulus repetition in identification tasks leads to improved behavioral performance ("repetition priming") but attenuated neural responses ("repetition suppression") throughout task-engaged cortical regions” | senses[0] |
| sense | FOUR ACCOUNTS OF ONE RELATIONSHIP, and the review's job is to keep them separate rather than to pick: FACILITATION (activity advanced in time - refuted for the typical case by single-cell recording, which finds firing curves to repeated stimuli SUBSUMED UNDER those to novel ones), SHARPENING (the poorly tuned cells drop out), SYNCHRONY (lower rates, tighter timing), and EXPLAINING AWAY (the Bayesian form of facilitation). Everyone agrees on improved efficiency; `the exact form that it takes remains elusive`— “we review four different theoretical proposals that have the potential to link repetition suppression and priming, with a particular focus on a proposal that stimulus repetition affects improved efficiency through enhanced neural” | senses[1] |
| sense | A REVIEW WHOSE VERDICT ON ITS OWN FAVOURITE IS A GAP: `Despite the promise that the Synchrony model holds for resolving the puzzle of repetition priming and repetition suppression, there are relatively few studies that have evaluated it empirically.` The title says the same - `Multiple mechanisms IN NEED OF TESTING`. The contribution is an inventory of untested explanations, and the paper is explicit that its preferred one is preferred on promise rather than on evidence— “Despite the promise that the Synchrony model holds for resolving the puzzle of repetition priming and repetition suppression, there are relatively few studies that have evaluated it empirically” | senses[2] |
| control | a CONTROL CONDITION against which spike-LFP coherence in the gamma range was compared — held — rules out that the synchronisation change is a general property of the recording rather than an effect of stimulus repetition— “Spikes elicited by the test grating were simultaneously more synchronized with the local field potential (LFP) (spike-LFP coherence) in the gamma frequency range (30–80 Hz) relative to a control condition in which the adapting grating was replaced with a random dot patch of matched luminance.” | controls[0] |
| control | the extreme form of the Explaining Away account was tested against the observed pattern — held — rules out that ALL repetition suppression is high-level repetition expectation - the extreme version predicts a pattern the data do not show— “This would appear to rule out the extreme version of the Explaining Away view in which all repetition suppression effects are explained by relatively high-level repetition expectation.” | controls[1] |
| differs in | repetition priming —contrasted-with→ repetition suppression — THE DIRECTION EACH MOVES ON THE SAME EVENT - repetition IMPROVES the behavioural measure and ATTENUATES the neural one. Not two phenomena but two readings of one, pointing opposite ways, which is the puzzle the paper's four mechanisms exist to dissolve— “Stimulus repetition in identification tasks leads to improved behavioral performance ("repetition priming") but attenuated neural responses ("repetition suppression") throughout task-engaged cortical regions”— “improved behavioral performance” | concept_edges[0] |
| note | repetition priming —contrasted-with→ repetition suppression — THE RECORD'S REASON FOR EXISTING. 'contrasted-with' rather than 'distinct-from': the paper is not separating two things, it is insisting they are one thing measured twice and asking why the signs disagree.— “Stimulus repetition in identification tasks leads to improved behavioral performance ("repetition priming") but attenuated neural responses ("repetition suppression") throughout task-engaged cortical regions” | concept_edges[0] |
| weight | repetition priming —contrasted-with→ repetition suppression — 0.95— “Stimulus repetition in identification tasks leads to improved behavioral performance ("repetition priming") but attenuated neural responses ("repetition suppression") throughout task-engaged cortical regions” | concept_edges[0] |
| outcome (stated by the tagger, no quotation) | control — held | controls[0] |
| outcome (stated by the tagger, no quotation) | control — held | controls[1] |
| replication | untested | |
| limitation | The favoured synchrony account has been evaluated empirically in very few studies.— “Despite the promise that the Synchrony model holds for resolving the puzzle of repetition priming and repetition suppression, there are relatively few studies that have evaluated it empirically.” | limitations[0] |
| limitation | Neither of the two surviving models has been subjected to a full set of experimental tests.— “However, the Bayesian Explaining Away model has received experimental support, as well, and neither the Synchrony nor Explaining Away models have been run through a full gauntlet of experimental tests.” | limitations[1] |
| limitation | How long-term plasticity would link activity decreases to changes in synchrony is unclear.— “It is further possible that LTD dominates the changes such that activities will be reduced overall, producing repetition suppression, but how this would relate to changes in synchrony is quite unclear.” | limitations[2] |
finding · quantity · variable · definition · key-term — grounded in the full text| finding | Of the four candidate accounts reviewed, only the Facilitation model is judged definitively ruled out by existing data.— “Having reviewed four basic proposals as to how repetition suppression might afford repetition… | content_tags.findings[0] |
| finding | The authors judge the enhanced-synchronization account the most promising of the surviving proposals. | content_tags.findings[1] |
| finding | In their model, spike synchronization increased as firing rates decreased with repetition. | content_tags.findings[2] |
| finding | Their preliminary intracranial EEG study in two surgical patients found behavioural priming together with increased low-frequency evoked power at essentially every task-engaged electrode. | content_tags.findings[3] |
| finding | The same intracranial recordings showed increased fronto-temporal phase-locking with repetition, in alpha and low beta bands. 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. | content_tags.findings[4] |
| finding | They propose that the processes producing synchronization and those producing activity decreases may be partly separate, which would explain reported dissociations between repetition suppression and priming. 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. | content_tags.findings[5] |
| quantity | two patients — number of epilepsy surgery patients in the authors' own preliminary electrocorticography study of object naming 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. | content_tags.quantities[0] |
| quantity | 1–15 Hz — frequency band in which evoked power increased with stimulus repetition in their intracranial recordings 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. | content_tags.quantities[1] |
| quantity | 8–12 Hz and 12–18 Hz — alpha and low-beta bands in which fronto-temporal phase-locking increased with repetition in their intracranial recordings 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. | content_tags.quantities[2] |
| variable | stimulus repetition (independent) 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. | content_tags.variables[0] |
| variable | low-frequency evoked power (dependent) 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. | content_tags.variables[1] |
| variable | phase-locking (dependent) 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. | content_tags.variables[2] |
| definition | repetition priming 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. | content_tags.definitions[0] |
| definition | repetition suppression 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. | content_tags.definitions[1] |
| definition | Facilitation model 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. | content_tags.definitions[2] |
| definition | Sharpening 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. | content_tags.definitions[3] |
| definition | explaining away 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. | content_tags.definitions[4] |
| concept | repetition priming — not defined in this paper's own words; the behavioural half of the paradox - performance IMPROVES with repetition - and one of the two facts every candidate mechanism has to produce at once 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. | concepts[0] |
| concept | repetition suppression — not defined in this paper's own words; the neural half, and it points the other way: the response ATTENUATES throughout task-engaged cortex. Better behaviour, less brain activity, same event 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. | concepts[1] |
| concept | Sharpening — not defined in this paper's own words; the second account: the average falls because the POORLY TUNED cells fall away while the well-tuned ones keep firing - a smaller signal that is also a cleaner one 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. | concepts[2] |
| concept | neural synchronization — not defined in this paper's own words; the account this paper focuses on: cells fire at LOWER RATES but MORE SYNCHRONOUSLY, so downstream efficiency rises while summed activity falls. Suppression and improvement stop being in tension because they are measuring different things about the same spikes 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. | concepts[3] |
| concept | processing efficiency — not defined in this paper's own words; the shared commitment underneath all four accounts - everyone agrees the relationship reflects some form of improved efficiency, and the dispute is entirely about WHAT FORM 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. | concepts[4] |
| coherence | as written: phase-locking (LFP-LFP coherence) 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. | content_tags.statistics[0] |
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.
Tag layer © the Meta-Tagging Project, CC BY 4.0. The paper text is © its authors/publisher
and is linked, not reproduced. Excerpts shown are short quotations for identification and verification.
· back to index
· concepts · authors
· עברית
© 2026 Shir Sivroni · ORCID 0009-0000-2597-2824