Measurement of Rate of Expansion in the Perception of Radial Motion

Optic flow generated by rigid surface patches can be decomposed into a small number of elementary motion types. In these experiments, we show that the human visual system can evaluate expansion, one of these motion types, metrically. Moreover, we show that the discrimination of rates of expansion ar...

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Detalhes bibliográficos
Autores: Wurfel, Jeff D., Barraza, Jose Fernando, Grzywacz, Norberto M.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2005
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/101793
Acesso em linha:http://hdl.handle.net/11336/101793
Access Level:acceso abierto
Palavra-chave:https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
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spelling Measurement of Rate of Expansion in the Perception of Radial MotionWurfel, Jeff D.Barraza, Jose FernandoGrzywacz, Norberto M.https://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2Optic flow generated by rigid surface patches can be decomposed into a small number of elementary motion types. In these experiments, we show that the human visual system can evaluate expansion, one of these motion types, metrically. Moreover, we show that the discrimination of rates of expansion are spatially local. Because the estimation of the focus of expansion is somewhat imprecise, this locality sometimes produces predictable errors in the estimation of rate of expansion. One can make predictions like this with a model adapted from one previously developed for angular-velocity discrimination.Fil: Wurfel, Jeff D.. University of Southern California; Estados UnidosFil: Barraza, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Investigación en Luz, Ambiente y Visión. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Investigación en Luz, Ambiente y Visión; ArgentinaFil: Grzywacz, Norberto M.. University of Southern California; Estados UnidosPergamon-Elsevier Science Ltd2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/101793Wurfel, Jeff D.; Barraza, Jose Fernando; Grzywacz, Norberto M.; Measurement of Rate of Expansion in the Perception of Radial Motion; Pergamon-Elsevier Science Ltd; Vision Research; 45; 21; 12-2005; 2740-27510042-6989CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0042698905002208info:eu-repo/semantics/altIdentifier/doi/10.1016/j.visres.2005.03.022info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:38:26Zoai:ri.conicet.gov.ar:11336/101793instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:38:26.429CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Measurement of Rate of Expansion in the Perception of Radial Motion
title Measurement of Rate of Expansion in the Perception of Radial Motion
spellingShingle Measurement of Rate of Expansion in the Perception of Radial Motion
Wurfel, Jeff D.
https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
title_short Measurement of Rate of Expansion in the Perception of Radial Motion
title_full Measurement of Rate of Expansion in the Perception of Radial Motion
title_fullStr Measurement of Rate of Expansion in the Perception of Radial Motion
title_full_unstemmed Measurement of Rate of Expansion in the Perception of Radial Motion
title_sort Measurement of Rate of Expansion in the Perception of Radial Motion
dc.creator.none.fl_str_mv Wurfel, Jeff D.
Barraza, Jose Fernando
Grzywacz, Norberto M.
author Wurfel, Jeff D.
author_facet Wurfel, Jeff D.
Barraza, Jose Fernando
Grzywacz, Norberto M.
author_role author
author2 Barraza, Jose Fernando
Grzywacz, Norberto M.
author2_role author
author
dc.subject.none.fl_str_mv https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
topic https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
description Optic flow generated by rigid surface patches can be decomposed into a small number of elementary motion types. In these experiments, we show that the human visual system can evaluate expansion, one of these motion types, metrically. Moreover, we show that the discrimination of rates of expansion are spatially local. Because the estimation of the focus of expansion is somewhat imprecise, this locality sometimes produces predictable errors in the estimation of rate of expansion. One can make predictions like this with a model adapted from one previously developed for angular-velocity discrimination.
publishDate 2005
dc.date.none.fl_str_mv 2005-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/101793
Wurfel, Jeff D.; Barraza, Jose Fernando; Grzywacz, Norberto M.; Measurement of Rate of Expansion in the Perception of Radial Motion; Pergamon-Elsevier Science Ltd; Vision Research; 45; 21; 12-2005; 2740-2751
0042-6989
CONICET Digital
CONICET
url http://hdl.handle.net/11336/101793
identifier_str_mv Wurfel, Jeff D.; Barraza, Jose Fernando; Grzywacz, Norberto M.; Measurement of Rate of Expansion in the Perception of Radial Motion; Pergamon-Elsevier Science Ltd; Vision Research; 45; 21; 12-2005; 2740-2751
0042-6989
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0042698905002208
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.visres.2005.03.022
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15,812429

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