Stereo vision requires an explicit encoding of vertical disparity.

Vertical disparities influence the perception of 3D depth, but little is known about the neuronal mechanisms underlying this. One possibility is that these perceptual effects are mediated by an explicit encoding of two-dimensional disparity. Recently, J. C. A. Read and B. G. Cumming (2006) pointed o...

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Detalles Bibliográficos
Autores: Serrano Pedraza, Ignacio, Read, Jenny C A
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:español
OAI Identifier:oai:docta.ucm.es:20.500.14352/51810
Acceso en línea:https://hdl.handle.net/20.500.14352/51810
Access Level:acceso abierto
Palabra clave:159.9.07
159.93
Binocular vision
Vertical disparity
Induced effect
Psicología experimental
Percepción
6106 Psicología Experimental
6106.09 Procesos de Percepción
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oai_identifier_str oai:docta.ucm.es:20.500.14352/51810
network_acronym_str ES
network_name_str España
repository_id_str
spelling Stereo vision requires an explicit encoding of vertical disparity.Serrano Pedraza, IgnacioRead, Jenny C A159.9.07159.93Binocular visionVertical disparityInduced effectPsicología experimentalPercepción6106 Psicología Experimental6106.09 Procesos de PercepciónVertical disparities influence the perception of 3D depth, but little is known about the neuronal mechanisms underlying this. One possibility is that these perceptual effects are mediated by an explicit encoding of two-dimensional disparity. Recently, J. C. A. Read and B. G. Cumming (2006) pointed out that current psychophysical and physiological evidence is consistent with a much more economical one-dimensional encoding. Almost all relevant information about vertical disparity could in theory be extracted from the activity of purely horizontal-disparity sensors. Read and Cumming demonstrated that such a 1D system would experience Ogle's induced effect, a famous illusion produced by vertical disparity. Here, we test whether the brain employs this 1D encoding, using a version of the induced effect stimulus that simulates the viewing geometry at infinity and thus removes the cues which are otherwise available to the 1D model. This condition was compared to the standard induced effect stimulus, presented on a frontoparallel screen at finite viewing distance. We show that the induced effects experienced under the two conditions are indistinguishable. This rules out the 1D model proposed by Read and Cumming and shows that vertical disparity, including sign, must be explicitly encoded across the visual field.Universidad Complutense de Madrid20092009-01-0120092009-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/51810reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Españolspaopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/518102026-06-02T12:44:21Z
dc.title.none.fl_str_mv Stereo vision requires an explicit encoding of vertical disparity.
title Stereo vision requires an explicit encoding of vertical disparity.
spellingShingle Stereo vision requires an explicit encoding of vertical disparity.
Serrano Pedraza, Ignacio
159.9.07
159.93
Binocular vision
Vertical disparity
Induced effect
Psicología experimental
Percepción
6106 Psicología Experimental
6106.09 Procesos de Percepción
title_short Stereo vision requires an explicit encoding of vertical disparity.
title_full Stereo vision requires an explicit encoding of vertical disparity.
title_fullStr Stereo vision requires an explicit encoding of vertical disparity.
title_full_unstemmed Stereo vision requires an explicit encoding of vertical disparity.
title_sort Stereo vision requires an explicit encoding of vertical disparity.
dc.creator.none.fl_str_mv Serrano Pedraza, Ignacio
Read, Jenny C A
author Serrano Pedraza, Ignacio
author_facet Serrano Pedraza, Ignacio
Read, Jenny C A
author_role author
author2 Read, Jenny C A
author2_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 159.9.07
159.93
Binocular vision
Vertical disparity
Induced effect
Psicología experimental
Percepción
6106 Psicología Experimental
6106.09 Procesos de Percepción
topic 159.9.07
159.93
Binocular vision
Vertical disparity
Induced effect
Psicología experimental
Percepción
6106 Psicología Experimental
6106.09 Procesos de Percepción
description Vertical disparities influence the perception of 3D depth, but little is known about the neuronal mechanisms underlying this. One possibility is that these perceptual effects are mediated by an explicit encoding of two-dimensional disparity. Recently, J. C. A. Read and B. G. Cumming (2006) pointed out that current psychophysical and physiological evidence is consistent with a much more economical one-dimensional encoding. Almost all relevant information about vertical disparity could in theory be extracted from the activity of purely horizontal-disparity sensors. Read and Cumming demonstrated that such a 1D system would experience Ogle's induced effect, a famous illusion produced by vertical disparity. Here, we test whether the brain employs this 1D encoding, using a version of the induced effect stimulus that simulates the viewing geometry at infinity and thus removes the cues which are otherwise available to the 1D model. This condition was compared to the standard induced effect stimulus, presented on a frontoparallel screen at finite viewing distance. We show that the induced effects experienced under the two conditions are indistinguishable. This rules out the 1D model proposed by Read and Cumming and shows that vertical disparity, including sign, must be explicitly encoded across the visual field.
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-01-01
2009
2009-01-01
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/20.500.14352/51810
url https://hdl.handle.net/20.500.14352/51810
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
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.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
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