Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysis

Masking experiments, using vertical and horizontal sinusoidal depth corrugations, have suggested the existence of more than two spatial-frequency disparity mechanisms. This result was confirmed through an individual differences approach. Here, using factor analytic techniques, we want to investigate...

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Detalles Bibliográficos
Autores: Llamas Cornejo, Ichasus, Peterzell, David H., Serrano Pedraza, Ignacio
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/116966
Acceso en línea:https://hdl.handle.net/20.500.14352/116966
Access Level:acceso abierto
Palabra clave:Cyclopean motion
Sinusoidal depth corrugations
Stereovision
Temporal mechanisms
Percepción
Psicología (Psicología)
6106 Psicología Experimental
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spelling Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysisLlamas Cornejo, IchasusPeterzell, David H.Serrano Pedraza, IgnacioCyclopean motionSinusoidal depth corrugationsStereovisionTemporal mechanismsPercepciónPsicología (Psicología)6106 Psicología ExperimentalMasking experiments, using vertical and horizontal sinusoidal depth corrugations, have suggested the existence of more than two spatial-frequency disparity mechanisms. This result was confirmed through an individual differences approach. Here, using factor analytic techniques, we want to investigate the existence of independent temporal mechanisms in frontoparallel stereoscopic (cyclopean) motion. To construct stereomotion, we used sinusoidal depth corrugations obtained with dynamic random-dot stereograms. Thus, no luminance motion was present monocularly. We measured disparity thresholds for drifting vertical (up-down) and horizontal (left-right) sinusoidal corrugations of 0.4 cyc/deg at 0.25, 0.5, 1, 2, 4, 6, and 8 Hz. In total, we tested 34 participants. Results showed a small orientation anisotropy with lower thresholds for horizontal corrugations. Disparity thresholds as a function of temporal frequency were almost constant from 0.25 up to 1 Hz, and then they increased monotonically. Principal component analysis uncovered two significant factors for vertical and two for horizontal corrugations. Varimax rotation showed that one factor loaded from 0.25 to 1–2 Hz and a second factor from 2 to 4 to 8 Hz. Direct Oblimin rotation indicated a moderate intercorrelation of both factors. Our results suggest the possible existence of two somewhat interdependent temporal mechanisms involved in frontoparallel stereomotion.Federation of European Neuroscience Societies and John Wiley & Sons LtdUniversidad Complutense de Madrid20242024-04-1520242024-04-15journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/116966reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengMinisterio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Not available PID2021-122245NB-I00open 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:20.500.14352/1169662026-06-02T12:44:21Z
dc.title.none.fl_str_mv Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysis
title Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysis
spellingShingle Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysis
Llamas Cornejo, Ichasus
Cyclopean motion
Sinusoidal depth corrugations
Stereovision
Temporal mechanisms
Percepción
Psicología (Psicología)
6106 Psicología Experimental
title_short Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysis
title_full Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysis
title_fullStr Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysis
title_full_unstemmed Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysis
title_sort Temporal mechanisms in frontoparallel stereomotion revealed by individual differences analysis
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 Cyclopean motion
Sinusoidal depth corrugations
Stereovision
Temporal mechanisms
Percepción
Psicología (Psicología)
6106 Psicología Experimental
topic Cyclopean motion
Sinusoidal depth corrugations
Stereovision
Temporal mechanisms
Percepción
Psicología (Psicología)
6106 Psicología Experimental
description Masking experiments, using vertical and horizontal sinusoidal depth corrugations, have suggested the existence of more than two spatial-frequency disparity mechanisms. This result was confirmed through an individual differences approach. Here, using factor analytic techniques, we want to investigate the existence of independent temporal mechanisms in frontoparallel stereoscopic (cyclopean) motion. To construct stereomotion, we used sinusoidal depth corrugations obtained with dynamic random-dot stereograms. Thus, no luminance motion was present monocularly. We measured disparity thresholds for drifting vertical (up-down) and horizontal (left-right) sinusoidal corrugations of 0.4 cyc/deg at 0.25, 0.5, 1, 2, 4, 6, and 8 Hz. In total, we tested 34 participants. Results showed a small orientation anisotropy with lower thresholds for horizontal corrugations. Disparity thresholds as a function of temporal frequency were almost constant from 0.25 up to 1 Hz, and then they increased monotonically. Principal component analysis uncovered two significant factors for vertical and two for horizontal corrugations. Varimax rotation showed that one factor loaded from 0.25 to 1–2 Hz and a second factor from 2 to 4 to 8 Hz. Direct Oblimin rotation indicated a moderate intercorrelation of both factors. Our results suggest the possible existence of two somewhat interdependent temporal mechanisms involved in frontoparallel stereomotion.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-04-15
2024
2024-04-15
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/20.500.14352/116966
url https://hdl.handle.net/20.500.14352/116966
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Not available PID2021-122245NB-I00
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 Federation of European Neuroscience Societies and John Wiley & Sons Ltd
publisher.none.fl_str_mv Federation of European Neuroscience Societies and John Wiley & Sons Ltd
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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