Evidence map›Paper›PMID 20206527›Full record

ArticleCurrent biology : CB2010

Crowding changes appearance.

John A Greenwood, Peter J Bex, Steven C Dakin

Abstract read
In one paragraph

Article in Current biology : CB, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

51 citing papers in PubMed.

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  9. How do (perceptual) distracters distract?PLoS computational biology · 2022
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  20. Dissociable effects of visual crowding on the perception of color and motion.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

John A GreenwoodUCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London EC1V9EL, UK. john.greenwood@ucl.ac.uk
Peter J Bex
Steven C Dakin

Funding

Enhancement of Dynamic Media for Visually-Impaired PeopleR01EY019281 · NEI · SCHEPENS EYE RESEARCH INSTITUTE · PI BEX, PETER JOHN · 2009 to 2012
$1.9M
Psychophysical Correlates of Neurodegeneration in GlaucomaR01EY018664 · NEI · SCHEPENS EYE RESEARCH INSTITUTE · PI BEX, PETER JOHN · 2009 to 2012
$1.9M
NEI NIH HHS R01 EY018664NEI NIH HHS R01 EY019281Wellcome Trust
6 · The paper itself

Abstract

Crowding is the breakdown in object recognition that occurs in cluttered visual environments and the fundamental limit on peripheral vision, affecting identification within many visual modalities and across large spatial regions. Though frequently characterized as a disruptive process through which object representations are suppressed or lost altogether, we demonstrate that crowding systematically changes the appearance of objects. In particular, target patches of visual noise that are surrounded ("crowded") by oriented Gabor flankers become perceptually oriented, matching the flankers. This was established with a change-detection paradigm: under crowded conditions, target changes from noise to Gabor went unnoticed when the Gabor orientation matched the flankers (and the illusory target percept), despite being easily detected when they differed. Rotation of the flankers (leaving target noise unaltered) also induced illusory target rotations. Blank targets led to similar results, demonstrating that crowding can induce apparent structure where none exists. Finally, adaptation to these stimuli induced a tilt aftereffect at the target location, consistent with signals from the flankers "spreading" across space. These results confirm predictions from change-based models of crowding, such as averaging, and establish crowding as a regularization process that simplifies the peripheral field by promoting consistent appearance among adjacent objects.

Indexed as

Adaptation, PsychologicalEye MovementsHumansMaleModels, PsychologicalOrientationPattern Recognition, VisualPerceptual MaskingPhotic StimulationSpace PerceptionVision, OcularVisual Perception

Identifiers

PMID20206527
PMCPMC2849014

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.