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Curvature domains in V4 of macaque monkey

An important aspect of visual object recognition is the ability to perceive object shape. Two basic components of complex shapes are straight and curved contours. A large body of evidence suggests a modular hierarchy for shape representation progressing from simple and complex orientation in early a...

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Autores principales: Hu, Jia Ming, Song, Xue Mei, Wang, Qiannan, Roe, Anna Wang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7707819/
https://www.ncbi.nlm.nih.gov/pubmed/33211004
http://dx.doi.org/10.7554/eLife.57261
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author Hu, Jia Ming
Song, Xue Mei
Wang, Qiannan
Roe, Anna Wang
author_facet Hu, Jia Ming
Song, Xue Mei
Wang, Qiannan
Roe, Anna Wang
author_sort Hu, Jia Ming
collection PubMed
description An important aspect of visual object recognition is the ability to perceive object shape. Two basic components of complex shapes are straight and curved contours. A large body of evidence suggests a modular hierarchy for shape representation progressing from simple and complex orientation in early areas V1 and V2, to increasingly complex stages of curvature representation in V4, TEO, and TE. Here, we reinforce and extend the concept of modular representation. Using intrinsic signal optical imaging in Macaque area V4, we find sub-millimeter sized modules for curvature representation that are organized from low to high curvatures as well as domains with complex curvature preference. We propose a possible ‘curvature hypercolumn’ within V4. In combination with previous studies, we suggest that the key emergent functions at each stage of cortical processing are represented in systematic, modular maps.
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spelling pubmed-77078192020-12-02 Curvature domains in V4 of macaque monkey Hu, Jia Ming Song, Xue Mei Wang, Qiannan Roe, Anna Wang eLife Neuroscience An important aspect of visual object recognition is the ability to perceive object shape. Two basic components of complex shapes are straight and curved contours. A large body of evidence suggests a modular hierarchy for shape representation progressing from simple and complex orientation in early areas V1 and V2, to increasingly complex stages of curvature representation in V4, TEO, and TE. Here, we reinforce and extend the concept of modular representation. Using intrinsic signal optical imaging in Macaque area V4, we find sub-millimeter sized modules for curvature representation that are organized from low to high curvatures as well as domains with complex curvature preference. We propose a possible ‘curvature hypercolumn’ within V4. In combination with previous studies, we suggest that the key emergent functions at each stage of cortical processing are represented in systematic, modular maps. eLife Sciences Publications, Ltd 2020-11-19 /pmc/articles/PMC7707819/ /pubmed/33211004 http://dx.doi.org/10.7554/eLife.57261 Text en © 2020, Hu et al http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Neuroscience
Hu, Jia Ming
Song, Xue Mei
Wang, Qiannan
Roe, Anna Wang
Curvature domains in V4 of macaque monkey
title Curvature domains in V4 of macaque monkey
title_full Curvature domains in V4 of macaque monkey
title_fullStr Curvature domains in V4 of macaque monkey
title_full_unstemmed Curvature domains in V4 of macaque monkey
title_short Curvature domains in V4 of macaque monkey
title_sort curvature domains in v4 of macaque monkey
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7707819/
https://www.ncbi.nlm.nih.gov/pubmed/33211004
http://dx.doi.org/10.7554/eLife.57261
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AT songxuemei curvaturedomainsinv4ofmacaquemonkey
AT wangqiannan curvaturedomainsinv4ofmacaquemonkey
AT roeannawang curvaturedomainsinv4ofmacaquemonkey