Processing of natural images is feedforward: a simple behavioral test — TEI-tagged view

Schmidt, Schmidt · 2009 · cognitive-psychology · doi:10.3758/app.71.3.594 · 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. Claim type is 'existence' rather than 'method' because the rapid-chase criteria were proposed in earlier work (Schmidt et al., 2006; Vath & Schmidt, 2007) and are here applied, not introduced; the new claim is that natural-image priming in fact meets them. The source is pdftext, so the article text contains PDF artifacts (e.g. "stimulus– response" with a line-break space, "Van- Rullen"); quotes preserve these exactly. The limitation quote for the rapid-chase criteria stops before a trailing footnote marker ("...simple feedforward system.1") and is therefore an exact substring. 2026-08-19 and 2026-08-25 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.
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
rapid-chase criteria feedforward8 independence criterion priming effects3 behavioural-experiment117

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
phenomenonvisuomotor response priming with natural images— “We tested this theory in a visuomotor priming task in which speeded pointing responses were performed toward one of two target images containing a prespecified stimulus (e.g., animal vs. nonanimal, ellipse vs. rectangle).”
claim-typeexistence— “Our data indicate that prime and target signals remained strictly sequential throughout all processing stages, meeting unprecedentedly stringent behavioral criteria for feedforward processing (rapid-chase criteria).”
method — evidence— “We compared four tasks in two experiments to demonstrate rapid-chase processing of natural images.”
mechanismThe prime's feedforward wave arrives at motor areas first and drives the movement alone until the target's wave arrives and takes over; a longer SOA gives the prime a longer unopposed drive, which is why priming grows with SOA.— “Priming effects increase with prime–target SOA because the prime has more time to drive the response on its own when the target is further delayed.”mechanisms[0]
mechanismWhen no overt detour appears, opposing prime- and target-driven response tendencies conflict covertly and must be resolved before the movement can start, which shows up as a delayed onset instead.— “Even in the absence of detours, the delay of pointing onset probably reflects a covert conflict of opposing response tendencies from prime and target signals that must be resolved before movement onset can occur”mechanisms[1]
extends the authors' own rapid-chase theory of response priming (Schmidt et al., 2006; Vath & Schmidt, 2007)— “Our results extend our rapid-chase theory of response priming to the domain of natural image processing, linking visuomotor priming to feedforward processing of images (Schmidt et al., 2006; Vath & Schmidt, 2007).”claim_relations[0]
builds-on rapid natural-scene categorisation studies (Bacon-Macé et al., 2007; Kirchner & Thorpe, 2006; Thorpe et al., 1996; VanRullen & Koch, 2003; VanRullen & Thorpe, 2001, 2002)— “Our data strongly support the conclusion from previous studies (e.g., Bacon-Macé et al., 2007; Kirchner & Thorpe, 2006; Thorpe et al., 1996; VanRullen & Koch, 2003; Van- Rullen & Thorpe, 2001, 2002) that natural scenes can be classified on the basis of an initial feedforward sweep of processing (Bullier, 2001; Lamme &…claim_relations[1]
contradicts the claim that natural image classification is "ultra-rapid" (Kirchner & Thorpe, 2006; VanRullen & Thorpe, 2001)— “These differences considered, there is no indication here that natural image classification is extraordinarily fast, or “ultra-rapid” (Kirchner & Thorpe, 2006; VanRullen & Thorpe, 2001), when compared with even more basic tasks such as simple shape classification.”claim_relations[2]
senseTHREE NAMED CRITERIA, EACH WITH ITS JOB STATED - THE CLEAREST `a tool must be checkable` IN THIS CORPUS: `(1) Prime rather than target signals should determine the onset and initial direction of the response (initiation criterion); (2) target signals should be able to influence the response before it is completed (takeover criterion); and, crucially, (3) response kinematics should initially depend exclusively on prime characteristics and be independent of all target characteristics (independence criterion).` Numbered, named, and separately falsifiable - a dataset can meet 1 and 2 and fail 3, which is exactly what happens in one of this paper's four tasks. Compare jitendra2016, which grades a literature against someone else's published checklist: same discipline, applied to a mechanism instead of a field— “1) Prime rather than target signals should determine the onset and initial direction of the response (initiation criterion); (2) target signals should be able to influence the response before it is completed (takeover criterion); and, crucially, (3) response kinematics should initially depend exclusively on prime characteristics and be…senses[0]
senseAND THE CLAIM IS EQUIVALENCE, NOT IDENTITY, STATED BY THE AUTHORS IN THEIR OWN CONCLUSION: `our data indicate a rapid-chase system ... that is behaviorally equivalent to a feedforward system with high temporal resolution.` They say elsewhere that the criteria `do not guarantee that a stimulus-response system is strictly feedforward in all its substages`. A behavioural test that names the limit of what behaviour can establish. Most records in this corpus infer a mechanism from a behavioural measure; this one declines to, and says which claim the method does support instead— “our data indicate a rapid-chase system (Schmidt et al., 2006; Vath & Schmidt, 2007) that is behaviorally equivalent to a feedforward system with high temporal resolution”senses[1]
senseTHE PAPER CONTAINS ITS OWN BOUNDARY CONDITION - ONE OF FOUR TASKS FAILS: `Only in the large-small task, with its tardy response dynamics and small priming effects, does it become difficult to evaluate whether the independence criterion is met.` And the diagnosis is offered rather than withheld: `It rather seems that the large-small classification cannot be performed in a single feedforward sweep and requires more extensive, recurrent processing.` Same images, same participants, same apparatus - only the classification rule changed, and the account stops applying. A scope limit measured inside the paper rather than conceded to a critic later— “Only in the large–small task, with its tardy response dynamics and small priming effects, does it become difficult to evaluate whether the independence criterion is met”senses[2]
senseAND THE DOSE-RESPONSE COMES WITH ITS MECHANISM ATTACHED, WHICH IS RARE: `Priming effects increase with prime-target SOA because the prime has more time to drive the response on its own when the target is further delayed.` The `because` is not decoration - it is the rapid-chase model making the prediction, and the effect size is a duration rather than a strength. dijksterhuis1998 doses by prime DURATION and gets a bigger effect; this doses by the GAP and gets a longer unopposed run - two different quantities that both look like `more priming` in a results table— “Priming effects increase with prime–target SOA because the prime has more time to drive the response on its own when the target is further delayed”senses[3]
controleight sessions per participant, four in each task, with task order counterbalanced — held — rules out that a difference between the two tasks is an order effect— “In each experiment, the participants took part in eight experimental sessions, four in each of the two respective tasks, with task order counterbalanced across participants.”controls[0]
notefeedforward —operationalised-as→ rapid-chase criteria — THE WHOLE PAPER IN ONE EDGE, AND 'would show in the time course of the response' IS THE OPERATIONALISATION. A claim about neuronal signal flow is turned into three tests on a pointing trajectory. Weight 0.95: the criteria are named, numbered and separately checkable, and the authors state in the same passage that meeting them establishes BEHAVIOURAL EQUIVALENCE and not strict feedforward - so the edge is exactly as strong as the paper says it is, which is why it earns 0.95 rather than being hedged down.— “The feedforward properties of the system would show in the time course of the response and meet the following rapid-chase criteria”concept_edges[0]
weightfeedforward —operationalised-as→ rapid-chase criteria — 0.95— “The feedforward properties of the system would show in the time course of the response and meet the following rapid-chase criteria”concept_edges[0]
noteindependence criterion —part-of→ rapid-chase criteria — THE THIRD OF THREE, and the quote carries all three in order with their names. Recorded separately because it is the one that FAILS in the large-small task - a corpus that holds only 'rapid-chase criteria' as one node cannot express that a system met two of them. Weight 0.95: the membership is explicit in the enumeration.— “The feedforward properties of the system would show in the time course of the response and meet the following rapid-chase criteria: (1) Prime rather than target signals should determine the onset and initial direction of the response (initiation criterion); (2) target signals should be able to influence the response before it is completed…concept_edges[1]
weightindependence criterion —part-of→ rapid-chase criteria — 0.95— “The feedforward properties of the system would show in the time course of the response and meet the following rapid-chase criteria: (1) Prime rather than target signals should determine the onset and initial direction of the response (initiation criterion); (2) target signals should be able to influence the response before it is completed…concept_edges[1]
outcome (stated by the tagger, no quotation)control — heldcontrols[0]
replicationuntested
limitationThe paper does not claim that the rapid classification is driven by image semantics specifically.— “However, we make no claim here that classification is based exclusively on the semantic content of the images.”limitations[0]
limitationIn the slow large-small task the independence criterion could not be clearly evaluated.— “Only in the large–small task, with its tardy response dynamics and small priming effects, does it become difficult to evaluate whether the independence criterion is met.”limitations[1]
limitationIn Experiment 1 the raw trajectories did not show the initiation criterion; the conclusion rests on the derived spatial priming functions.— “Admittedly, these issues are less clear in Experiment 1, in which both tasks failed to meet the initiation criterion, at least when judged by looking only at the raw trajectories (Figure 2).”limitations[2]
limitationMeeting the rapid-chase criteria shows behavioural equivalence to a feedforward system, not that every processing substage is feedforward.— “Importantly, note that the rapid-chase criteria do not guarantee that a stimulus– response system is strictly feedforward in all its substages (and they…limitations[3]
Content tags
content-observations: finding · quantity · variable · definition · key-term — grounded in the full text
findingIn the animal-versus-object task, the time course of spatial priming matched the pattern the rapid-chase model predicts.content_tags.findings[0]
findingSpatial priming curves for every prime-target SOA first followed one identical trajectory and branched off only later, in order of increasing SOA, in line with the independence criterion.content_tags.findings[1]
findingThe large-versus-small size-judgement task was the one case where the independence criterion could not be assessed, because its responses were slow and its priming effects small.
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[2]
findingThe authors attribute the slowness of the size-judgement task to its needing recurrent processing rather than a single feedforward sweep.
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content_tags.findings[3]
findingThere was no indication that natural-image categorisation is extraordinarily fast, or 'ultra-rapid'.
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]
findingWhen prime and target categories conflicted, the pointing hand physically veered into the quadrant indicated by the prime before reversing toward the correct target.
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content_tags.findings[5]
findingPointing errors occurred almost only on inconsistent trials and grew with prime-target SOA, showing prime influence reaches the motor level.
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content_tags.findings[6]
findingThe authors conclude that visuomotor priming reads out the first pass of information through the visuomotor system, before recurrent processing contributes.
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content_tags.findings[7]
quantity380 msec — time after prime onset at which the hand began moving on consistent trials in the large-small task (versus roughly 300 msec in the animal-object task)
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content_tags.quantities[0]
evidence status notequantity — THE QUOTE CONTINUES A SENTENCE THAT THIS COPY CUTS IN TWO - a running head and the caption of Figure 3 stand between it and the words it follows, which read 'roughly 300 msec after prime onset in the'.content_tags.quantities[0]
quantity280 msec / 220 msec — movement onset times after prime onset in the toy-animal-object and ellipse-rectangle tasks of Experiment 2
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content_tags.quantities[1]
quantity160 msec — lag of priming-effect onset in the large-small task relative to the ellipse-rectangle task
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content_tags.quantities[2]
quantity33, 50, 67, 83, or 100 msec — the five prime-target stimulus onset asynchronies used, with primes shown for 33 msec
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content_tags.quantities[3]
quantityTwelve — total participants, six in each of the two experiments
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content_tags.quantities[4]
quantity1.14% and 1.73% — trials discarded by the exclusion rules in Experiments 1 and 2
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content_tags.quantities[5]
quantityabout 80 msec — how much earlier spatial priming onset occurred in the animal-object task than in the large-small task
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content_tags.quantities[6]
variableprime–target SOA (independent)
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content_tags.variables[0]
variablepointing trajectories (dependent)
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content_tags.variables[3]
variablerates of response errors (dependent)
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content_tags.variables[4]
definitionfeedforward processing
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content_tags.definitions[0]
definitionrapid chase
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content_tags.definitions[1]
definitionrapid-chase criteria
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content_tags.definitions[2]
definitionindependence criterion
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content_tags.definitions[3]
definitionspatial priming function
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content_tags.definitions[4]
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.
conceptrapid-chase criteria — not defined in this paper's own words; THREE NAMED, NUMBERED, INDIVIDUALLY FALSIFIABLE TESTS - initiation, takeover, independence - each with its own stated job. A reader can check a dataset against the third without accepting the first, which is what makes this a tool rather than a verdict
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concepts[0]
conceptfeedforward — not defined in this paper's own words; defined for this paper's purposes at the level of a single cell: passing activation on BEFORE integrating any feedback about that signal. The behavioural criteria are then built to test what such a system would look like from outside
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concepts[1]
conceptindependence criterion — not defined in this paper's own words; THE STRICTEST OF THE THREE, and the one that fails: response kinematics must depend EXCLUSIVELY on the prime and be independent of ALL target characteristics. It is the criterion that establishes strict sequentiality, and the large-small task cannot meet it
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]
conceptpriming effects — not defined in this paper's own words; the dependent measure, read off pointing trajectories rather than reaction times - and the paper's mechanism predicts their size directly: the longer the target is delayed, the longer the prime drives the response alone
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concepts[3]
Statistics — cross-field join keys
field-invariant statistical terms, used in their statistical sense (gated on a number / symbol / test). A p-value or a standard deviation means the SAME thing in physics, biology, psychology and sociology — so these are the strongest cross-field join keys. Grounded verbatim.
F-test / ANOVA F as written: F tests
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content_tags.statistics[0]
jackknife as written: jackknifing methods
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content_tags.statistics[1]
arcsine transformation as written: arcsine-transformed error rates
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content_tags.statistics[2]
data smoothing filter as written: T4253H filter
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content_tags.statistics[3]
standard error as written: corrected for between-subjects variance
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content_tags.statistics[4]

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