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Perceptual Grouping and Visual Enumeration

We used lateralized Event-Related Potential (ERP) measures – the N2pc and CDA/SPCN components – to assess the role of grouping by target similarity during enumeration. Participants saw a variable number (0, 1, 2 or 3) of same- or differently-colored targets presented among homogeneous distracters, a...

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Detalles Bibliográficos
Autores principales: Mazza, Veronica, Caramazza, Alfonso
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3511330/
https://www.ncbi.nlm.nih.gov/pubmed/23226408
http://dx.doi.org/10.1371/journal.pone.0050862
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author Mazza, Veronica
Caramazza, Alfonso
author_facet Mazza, Veronica
Caramazza, Alfonso
author_sort Mazza, Veronica
collection PubMed
description We used lateralized Event-Related Potential (ERP) measures – the N2pc and CDA/SPCN components – to assess the role of grouping by target similarity during enumeration. Participants saw a variable number (0, 1, 2 or 3) of same- or differently-colored targets presented among homogeneous distracters, and performed an enumeration task. Results showed that the N2pc, but not the CDA, was larger for multiple targets of identical color relative to targets of different colors. The findings are interpreted in terms of the effects of grouping on early versus late stages of multiple object processing. Within this framework, they reveal that grouping has an effect on early individuation mechanisms, while later processing mechanisms are less prone to such an influence.
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spelling pubmed-35113302012-12-05 Perceptual Grouping and Visual Enumeration Mazza, Veronica Caramazza, Alfonso PLoS One Research Article We used lateralized Event-Related Potential (ERP) measures – the N2pc and CDA/SPCN components – to assess the role of grouping by target similarity during enumeration. Participants saw a variable number (0, 1, 2 or 3) of same- or differently-colored targets presented among homogeneous distracters, and performed an enumeration task. Results showed that the N2pc, but not the CDA, was larger for multiple targets of identical color relative to targets of different colors. The findings are interpreted in terms of the effects of grouping on early versus late stages of multiple object processing. Within this framework, they reveal that grouping has an effect on early individuation mechanisms, while later processing mechanisms are less prone to such an influence. Public Library of Science 2012-11-30 /pmc/articles/PMC3511330/ /pubmed/23226408 http://dx.doi.org/10.1371/journal.pone.0050862 Text en © 2012 Mazza, Caramazza http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Mazza, Veronica
Caramazza, Alfonso
Perceptual Grouping and Visual Enumeration
title Perceptual Grouping and Visual Enumeration
title_full Perceptual Grouping and Visual Enumeration
title_fullStr Perceptual Grouping and Visual Enumeration
title_full_unstemmed Perceptual Grouping and Visual Enumeration
title_short Perceptual Grouping and Visual Enumeration
title_sort perceptual grouping and visual enumeration
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3511330/
https://www.ncbi.nlm.nih.gov/pubmed/23226408
http://dx.doi.org/10.1371/journal.pone.0050862
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