Reaction time asymmetries between expansion and contraction

Different asymmetries between expansion and contraction (radial motions) have been reported in the literature. Often these patterns have been regarded as implying different channels for each type of radial direction (outward versus inwards) operating at a higher level of visual motion processing. In...

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Detalles Bibliográficos
Autor: López-Moliner, Joan
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2005
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/55688
Acceso en línea:https://hdl.handle.net/2445/55688
Access Level:acceso abierto
Palabra clave:Percepció visual
Temps de reacció (Psicologia)
Moviment
Visual perception
Reaction time (Psychology)
Motion
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spelling Reaction time asymmetries between expansion and contractionLópez-Moliner, JoanPercepció visualTemps de reacció (Psicologia)MovimentVisual perceptionReaction time (Psychology)MotionDifferent asymmetries between expansion and contraction (radial motions) have been reported in the literature. Often these patterns have been regarded as implying different channels for each type of radial direction (outward versus inwards) operating at a higher level of visual motion processing. In two experiments (detection and discrimination tasks) we report reaction time asymmetries between expansion and contraction. Power functions were fitted to the data. While an exponent of 0.5 accounted for the expansion data better, a value of unity yielded the best fit for the contraction data. Instead of interpreting these differences as corresponding to different higher order motion detectors, we regard these findings as reflecting the fact that expansion and contraction tap two distinct psychophysical input channels underlying the processing of fast and slow velocities respectively.Universitat de València2005info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/55688Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://www.uv.es/psicologica/articulos1.05/9-LOPEZMOLINER.pdfPsicologica, 2005, vol. 26, p. 139-146(c) López i Moliner, Joan, 2005info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/556882026-05-27T06:46:51Z
dc.title.none.fl_str_mv Reaction time asymmetries between expansion and contraction
title Reaction time asymmetries between expansion and contraction
spellingShingle Reaction time asymmetries between expansion and contraction
López-Moliner, Joan
Percepció visual
Temps de reacció (Psicologia)
Moviment
Visual perception
Reaction time (Psychology)
Motion
title_short Reaction time asymmetries between expansion and contraction
title_full Reaction time asymmetries between expansion and contraction
title_fullStr Reaction time asymmetries between expansion and contraction
title_full_unstemmed Reaction time asymmetries between expansion and contraction
title_sort Reaction time asymmetries between expansion and contraction
dc.creator.none.fl_str_mv López-Moliner, Joan
author López-Moliner, Joan
author_facet López-Moliner, Joan
author_role author
dc.subject.none.fl_str_mv Percepció visual
Temps de reacció (Psicologia)
Moviment
Visual perception
Reaction time (Psychology)
Motion
topic Percepció visual
Temps de reacció (Psicologia)
Moviment
Visual perception
Reaction time (Psychology)
Motion
description Different asymmetries between expansion and contraction (radial motions) have been reported in the literature. Often these patterns have been regarded as implying different channels for each type of radial direction (outward versus inwards) operating at a higher level of visual motion processing. In two experiments (detection and discrimination tasks) we report reaction time asymmetries between expansion and contraction. Power functions were fitted to the data. While an exponent of 0.5 accounted for the expansion data better, a value of unity yielded the best fit for the contraction data. Instead of interpreting these differences as corresponding to different higher order motion detectors, we regard these findings as reflecting the fact that expansion and contraction tap two distinct psychophysical input channels underlying the processing of fast and slow velocities respectively.
publishDate 2005
dc.date.none.fl_str_mv 2005
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/55688
url https://hdl.handle.net/2445/55688
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://www.uv.es/psicologica/articulos1.05/9-LOPEZMOLINER.pdf
Psicologica, 2005, vol. 26, p. 139-146
dc.rights.none.fl_str_mv (c) López i Moliner, Joan, 2005
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) López i Moliner, Joan, 2005
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universitat de València
publisher.none.fl_str_mv Universitat de València
dc.source.none.fl_str_mv Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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