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Record W2974183472 · doi:10.1167/19.10.288c

Fast motion drags shape

2019· article· en· W2974183472 on OpenAlex
Mark Wexler, Patrick Cavanagh

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueJournal of Vision · 2019
Typearticle
Languageen
FieldComputer Science
TopicComputer Graphics and Visualization Techniques
Canadian institutionsYork University
Fundersnot available
KeywordsMotion (physics)Computer scienceGeologyArtificial intelligence

Abstract

fetched live from OpenAlex

Fast motion on the retina causes salient visual smear. At moderate speeds, this smear is suppressed when the motion lasts 30 ms or more (Burr, 1981). In contrast, smear from motion at saccadic speeds of several hundred degrees per second is not diminished at any duration. It is suppressed, however, if the motion is preceded by a static image of the moving object at the starting point and then finishes with a static image at the endpoint. The static endpoints create a paradoxical perception of a clear, moving object, but moving so fast that no clear shape should be seen. We examined whether this percept arises from de-smearing the actual moving shape, or whether it is an interpolation of the static endpoints. Observers discriminated between two shapes that moved over 10 deg at 200 deg/s (on a display refreshed at 1440 Hz). Without the static endpoints the shapes could be discriminated with near-perfect accuracy. We then displayed one of the shapes statically at the start and then at the end of the trajectory. The moving shape could be the same as the static shapes or not. When the duration of the static endpoints was over 50 ms, observers could no longer identify the moving shape. Instead, they reported that the clear moving shape was the shape of the static endpoints. We argue that the effect is distinct from apparent motion, and is not due to weighted averaging between the static and moving shapes. The effect breaks down for lower speeds, or motion that is sampled below 200 Hz. We conclude that fast, smooth motion can drag the percept of a briefly shown static shape along the motion path. This effect has obvious parallels to saccadic suppression and may explain why we perceive a clear world during saccades.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.870
Threshold uncertainty score0.188

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.012
GPT teacher head0.299
Teacher spread0.287 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it