Orientation mechanisms in stereoscopic vision: an individual differences approach

The stereoscopic system is typically tested by measuring its response to sinusoidal disparity corrugations. Previous research using psychophysical methods like masking and adaptation has provided evidence about the existence of disparity mechanisms tuned to spatial frequency and orientation. Analyse...

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Detalles Bibliográficos
Autores: Llamas Cornejo, Ichasus, Peterzell, David H., Serrano Pedraza, Ignacio
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/124789
Acceso en línea:https://hdl.handle.net/20.500.14352/124789
Access Level:acceso abierto
Palabra clave:Stereovision
Orientation mechanisms
Sinusoidal depth corrugations
Individual differences
Percepción
6106 Psicología Experimental
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spelling Orientation mechanisms in stereoscopic vision: an individual differences approachLlamas Cornejo, IchasusPeterzell, David H.Serrano Pedraza, IgnacioStereovisionOrientation mechanismsSinusoidal depth corrugationsIndividual differencesPercepción6106 Psicología ExperimentalThe stereoscopic system is typically tested by measuring its response to sinusoidal disparity corrugations. Previous research using psychophysical methods like masking and adaptation has provided evidence about the existence of disparity mechanisms tuned to spatial frequency and orientation. Analyses based on individual differences have confirmed only the existence of disparity mechanisms tuned to spatial frequency. The main objective of this study is to investigate the existence of orientation-selective disparity mechanisms using an individual differences approach. We measured the disparity thresholds of 37 subjects using sinusoidal disparity corrugations constructed from dynamic random-dot stereograms with spatial frequencies of 0.1, 0.4, and 0.8 cpd and 7 orientations (ranging from 0° to 90° in steps of 15°). Stereo thresholds for 0.1 cpd showed a strong anisotropy with disparity thresholds increasing from 90° (horizontal) to 0° (vertical). This anisotropy was reduced for the other two spatial frequencies. Component and factor analyses revealed that closer orientations tend to group together, suggesting the presence of underlying orientation-selective mechanisms in stereovision. These results provide new evidence for disparity channels tuned to orientation underlying the processing of disparity corrugations.ElsevierUniversidad Complutense de Madrid20252025-10-0920252025-10-09journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/124789reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1247892026-06-02T12:44:21Z
dc.title.none.fl_str_mv Orientation mechanisms in stereoscopic vision: an individual differences approach
title Orientation mechanisms in stereoscopic vision: an individual differences approach
spellingShingle Orientation mechanisms in stereoscopic vision: an individual differences approach
Llamas Cornejo, Ichasus
Stereovision
Orientation mechanisms
Sinusoidal depth corrugations
Individual differences
Percepción
6106 Psicología Experimental
title_short Orientation mechanisms in stereoscopic vision: an individual differences approach
title_full Orientation mechanisms in stereoscopic vision: an individual differences approach
title_fullStr Orientation mechanisms in stereoscopic vision: an individual differences approach
title_full_unstemmed Orientation mechanisms in stereoscopic vision: an individual differences approach
title_sort Orientation mechanisms in stereoscopic vision: an individual differences approach
dc.creator.none.fl_str_mv Llamas Cornejo, Ichasus
Peterzell, David H.
Serrano Pedraza, Ignacio
author Llamas Cornejo, Ichasus
author_facet Llamas Cornejo, Ichasus
Peterzell, David H.
Serrano Pedraza, Ignacio
author_role author
author2 Peterzell, David H.
Serrano Pedraza, Ignacio
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv Stereovision
Orientation mechanisms
Sinusoidal depth corrugations
Individual differences
Percepción
6106 Psicología Experimental
topic Stereovision
Orientation mechanisms
Sinusoidal depth corrugations
Individual differences
Percepción
6106 Psicología Experimental
description The stereoscopic system is typically tested by measuring its response to sinusoidal disparity corrugations. Previous research using psychophysical methods like masking and adaptation has provided evidence about the existence of disparity mechanisms tuned to spatial frequency and orientation. Analyses based on individual differences have confirmed only the existence of disparity mechanisms tuned to spatial frequency. The main objective of this study is to investigate the existence of orientation-selective disparity mechanisms using an individual differences approach. We measured the disparity thresholds of 37 subjects using sinusoidal disparity corrugations constructed from dynamic random-dot stereograms with spatial frequencies of 0.1, 0.4, and 0.8 cpd and 7 orientations (ranging from 0° to 90° in steps of 15°). Stereo thresholds for 0.1 cpd showed a strong anisotropy with disparity thresholds increasing from 90° (horizontal) to 0° (vertical). This anisotropy was reduced for the other two spatial frequencies. Component and factor analyses revealed that closer orientations tend to group together, suggesting the presence of underlying orientation-selective mechanisms in stereovision. These results provide new evidence for disparity channels tuned to orientation underlying the processing of disparity corrugations.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-10-09
2025
2025-10-09
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/124789
url https://hdl.handle.net/20.500.14352/124789
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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score 15,81155

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