Antagonism between fine and coarse motion sensors depends on stimulus size and contrast

The perceived direction of motion of a brief visual stimulus that contains fine features reverses if static coarser features are added to it. Here we show that the reversal in perceived direction disappears if the stimulus is reduced in size from 2.8 deg to 0.35 deg radius. We show that for a stimul...

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Detalles Bibliográficos
Autores: Serrano Pedraza, Ignacio, Derrington, Andrew M
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/44958
Acceso en línea:https://hdl.handle.net/20.500.14352/44958
Access Level:acceso abierto
Palabra clave:159.9.07
159.93
Motion
Temporal vision
Motion energy detector
Motion impairments
Inhibition
Interaction between motion sensors
Psicología experimental
Percepción
6106 Psicología Experimental
6106.09 Procesos de Percepción
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oai_identifier_str oai:docta.ucm.es:20.500.14352/44958
network_acronym_str ES
network_name_str España
repository_id_str
spelling Antagonism between fine and coarse motion sensors depends on stimulus size and contrastSerrano Pedraza, IgnacioDerrington, Andrew M159.9.07159.93MotionTemporal visionMotion energy detectorMotion impairmentsInhibitionInteraction between motion sensorsPsicología experimentalPercepción6106 Psicología Experimental6106.09 Procesos de PercepciónThe perceived direction of motion of a brief visual stimulus that contains fine features reverses if static coarser features are added to it. Here we show that the reversal in perceived direction disappears if the stimulus is reduced in size from 2.8 deg to 0.35 deg radius. We show that for a stimulus with 1.4 deg radius, the reversals occur when the ratio between the contrast of the fine features and of the coarser features is higher than 0.8 and lower than 4. For stimulus with 0.35 deg radius, the reversals never appear for any contrast ratio. We also show that if the stimulus is presented within an annular window with small radius, errors disappear but they return if the radius is increased to 2 deg. The errors in motion discrimination described here can be explained by a model of motion sensing in which the signals from fine-scale and coarse-scale sensors are subtracted from one another (I. Serrano-Pedraza, P. Goddard, & A. M. Derrington, 2007). The model produces errors in direction when the signals in the fine and coarse sensors are approximately balanced. The errors disappear when stimulus size is reduced because the reduction in size differentially reduces the response of the low spatial frequency motion sensors.Scholar OneUniversidad Complutense de Madrid20102010-01-0120102010-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/44958reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/449582026-06-02T12:44:21Z
dc.title.none.fl_str_mv Antagonism between fine and coarse motion sensors depends on stimulus size and contrast
title Antagonism between fine and coarse motion sensors depends on stimulus size and contrast
spellingShingle Antagonism between fine and coarse motion sensors depends on stimulus size and contrast
Serrano Pedraza, Ignacio
159.9.07
159.93
Motion
Temporal vision
Motion energy detector
Motion impairments
Inhibition
Interaction between motion sensors
Psicología experimental
Percepción
6106 Psicología Experimental
6106.09 Procesos de Percepción
title_short Antagonism between fine and coarse motion sensors depends on stimulus size and contrast
title_full Antagonism between fine and coarse motion sensors depends on stimulus size and contrast
title_fullStr Antagonism between fine and coarse motion sensors depends on stimulus size and contrast
title_full_unstemmed Antagonism between fine and coarse motion sensors depends on stimulus size and contrast
title_sort Antagonism between fine and coarse motion sensors depends on stimulus size and contrast
dc.creator.none.fl_str_mv Serrano Pedraza, Ignacio
Derrington, Andrew M
author Serrano Pedraza, Ignacio
author_facet Serrano Pedraza, Ignacio
Derrington, Andrew M
author_role author
author2 Derrington, Andrew M
author2_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 159.9.07
159.93
Motion
Temporal vision
Motion energy detector
Motion impairments
Inhibition
Interaction between motion sensors
Psicología experimental
Percepción
6106 Psicología Experimental
6106.09 Procesos de Percepción
topic 159.9.07
159.93
Motion
Temporal vision
Motion energy detector
Motion impairments
Inhibition
Interaction between motion sensors
Psicología experimental
Percepción
6106 Psicología Experimental
6106.09 Procesos de Percepción
description The perceived direction of motion of a brief visual stimulus that contains fine features reverses if static coarser features are added to it. Here we show that the reversal in perceived direction disappears if the stimulus is reduced in size from 2.8 deg to 0.35 deg radius. We show that for a stimulus with 1.4 deg radius, the reversals occur when the ratio between the contrast of the fine features and of the coarser features is higher than 0.8 and lower than 4. For stimulus with 0.35 deg radius, the reversals never appear for any contrast ratio. We also show that if the stimulus is presented within an annular window with small radius, errors disappear but they return if the radius is increased to 2 deg. The errors in motion discrimination described here can be explained by a model of motion sensing in which the signals from fine-scale and coarse-scale sensors are subtracted from one another (I. Serrano-Pedraza, P. Goddard, & A. M. Derrington, 2007). The model produces errors in direction when the signals in the fine and coarse sensors are approximately balanced. The errors disappear when stimulus size is reduced because the reduction in size differentially reduces the response of the low spatial frequency motion sensors.
publishDate 2010
dc.date.none.fl_str_mv 2010
2010-01-01
2010
2010-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/44958
url https://hdl.handle.net/20.500.14352/44958
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Scholar One
publisher.none.fl_str_mv Scholar One
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869417238836019200
score 15.300724

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