Broad attention uncovers benefits of stimulus uniformity in visual crowding.

Rummens, K.; Sayim, Bilge

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1038/s41598-021-03258-z

URL permanente :

http://hdl.handle.net/20.500.12210/103113

Titre :

Broad attention uncovers benefits of stimulus uniformity in visual crowding.

Auteur(s) :

Rummens, K. [Auteur]
Universität Bern = University of Bern = Université de Berne [UNIBE]
Sayim, Bilge [Auteur]
Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 [SCALab]

Titre de la revue :

Scientific Reports

Nom court de la revue :

Sci Rep

Numéro :

Éditeur :

Nature Publishing Group

Date de publication :

2021-12

ISSN :

2045-2322

Discipline(s) HAL :

Sciences cognitives

Résumé en anglais : [en]

Crowding is the interference by surrounding objects (flankers) with target perception. Low target-flanker similarity usually yields weaker crowding than high similarity (‘similarity rule’) with less interference, e.g., by ...
Lire la suite >Crowding is the interference by surrounding objects (flankers) with target perception. Low target-flanker similarity usually yields weaker crowding than high similarity (‘similarity rule’) with less interference, e.g., by opposite- than same-contrast polarity flankers. The advantage of low target-flanker similarity has typically been shown with attentional selection of a single target object. Here, we investigated the validity of the similarity rule when broadening attention to multiple objects. In three experiments, we measured identification for crowded letters (Experiment 1), tumbling Ts (Experiment 2), and tilted lines (Experiment 3). Stimuli consisted of three items that were uniform or alternating in contrast polarity and were briefly presented at ten degrees eccentricity. Observers reported all items (full report) or only the left, central, or right item (single-item report). In Experiments 1 and 2, consistent with the similarity rule, single central item performance was superior with opposite- compared to same-contrast polarity flankers. With full report, the similarity rule was inverted: performance was better for uniform compared to alternating stimuli. In Experiment 3, contrast polarity did not affect performance. We demonstrated a reversal of the similarity rule under broadened attention, suggesting that stimulus uniformity benefits crowded object recognition when intentionally directing attention towards all stimulus elements. We propose that key properties of crowding have only limited validity as they may require a-priori differentiation of target and context.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
CHU Lille

Collections :

Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193

Équipe(s) de recherche :

Équipe Action, Vision et Apprentissage (AVA)

Date de dépôt :

2024-01-18T08:10:34Z
2024-02-02T07:48:54Z

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s41598-021-03258-z.pdf
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Ce document est diffusé sous licence Attribution 3.0 United States

Numéro de version	Lien	Date de modification
2	20.500.12210/103113*	2024-02-02T07:42:13Z
1	20.500.12210/103113.1	2024-01-18T08:10:34Z

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