Color AfterImages Determined in Non-Cardinal Color Axes

Autores
Paz Filgueira, Clemente; Elliot, Sarah; Tan, Michael; Cao, Dingcao
Año de publicación
2018
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Introduction: Complementary color afterimages appear after the removal of a bright stimulus from the visual field. Using a time-varying paradigm, Zaidi et al (Current Biology, 2012) found that adaptation within retinal ganglion cells may be sufficient to account for the appearance of color afterimages for stimuli modulating along the cardinal color axes of l (L/(L+M)) or s (S/(L+M)). The current study modulated stimuli along non-cardinal diagonal axes in MacLeod & Boynton cone chromaticity space to evaluate whether adaptation within higher order mechanisms contributes to color afterimages. Methods: Subjects (3 males and 3 females) were presented stimuli consisting of two hemidisks subtending 3.6° on an equal energy white (EEW) background (20 cd/m2). The colors of the hemidisks were modulated complementarily by sinusoidal half-cycles (1/32 Hz) along one of five axes: (1) L+M+S, (2) l, (3) s, and two non-cardinal axes that modulated l and s simultaneously with the same contrasts as those modulations along the cardinal axes. The task of the observers was to indicate the time at which the two semicircles appeared the same shade of gray (identity point) using a face clock. For each axis, we tested four contrasts (L+M+S: 12.5%-50%; l: 2.9%-6.5%; s: 35%-80%). Results: The time to reach the identity point increased linearly with stimulus contrast for all axes. The identity point was reached faster for stimuli along s-axis than for the non-cardinal axes under the same s-contrasts, whereas no difference was found between the non-cardinal and the l axes under the same l contrast. Conclusions. The time-varying afterimage for stimuli modulated along the non-cardinal color axes was determined by the cardinal mechanism with slower adaptation. This evidence indicates that adaptation within retinal ganglion cells is sufficient to account for the dynamics of color afterimages.
Fil: Paz Filgueira, Clemente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Investigación en Luz, Ambiente y Visión. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Investigación en Luz, Ambiente y Visión; Argentina. University of Illinois; Estados Unidos
Fil: Elliot, Sarah. Roosevelt University; Estados Unidos
Fil: Tan, Michael. University Of Illinois At Chicago; Estados Unidos
Fil: Cao, Dingcao. University of Illinois; Estados Unidos
Vision Sciences Society 18th Annual Meeting
St Pete Beach
Estados Unidos
Vision Sciences Society
Materia
Color Afterimages
Postreceptoral pathways
Higher order mechanisms
Non-cardinal axes
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/272882

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network_name_str CONICET Digital (CONICET)
spelling Color AfterImages Determined in Non-Cardinal Color AxesPaz Filgueira, ClementeElliot, SarahTan, MichaelCao, DingcaoColor AfterimagesPostreceptoral pathwaysHigher order mechanismsNon-cardinal axeshttps://purl.org/becyt/ford/2.6https://purl.org/becyt/ford/2Introduction: Complementary color afterimages appear after the removal of a bright stimulus from the visual field. Using a time-varying paradigm, Zaidi et al (Current Biology, 2012) found that adaptation within retinal ganglion cells may be sufficient to account for the appearance of color afterimages for stimuli modulating along the cardinal color axes of l (L/(L+M)) or s (S/(L+M)). The current study modulated stimuli along non-cardinal diagonal axes in MacLeod & Boynton cone chromaticity space to evaluate whether adaptation within higher order mechanisms contributes to color afterimages. Methods: Subjects (3 males and 3 females) were presented stimuli consisting of two hemidisks subtending 3.6° on an equal energy white (EEW) background (20 cd/m2). The colors of the hemidisks were modulated complementarily by sinusoidal half-cycles (1/32 Hz) along one of five axes: (1) L+M+S, (2) l, (3) s, and two non-cardinal axes that modulated l and s simultaneously with the same contrasts as those modulations along the cardinal axes. The task of the observers was to indicate the time at which the two semicircles appeared the same shade of gray (identity point) using a face clock. For each axis, we tested four contrasts (L+M+S: 12.5%-50%; l: 2.9%-6.5%; s: 35%-80%). Results: The time to reach the identity point increased linearly with stimulus contrast for all axes. The identity point was reached faster for stimuli along s-axis than for the non-cardinal axes under the same s-contrasts, whereas no difference was found between the non-cardinal and the l axes under the same l contrast. Conclusions. The time-varying afterimage for stimuli modulated along the non-cardinal color axes was determined by the cardinal mechanism with slower adaptation. This evidence indicates that adaptation within retinal ganglion cells is sufficient to account for the dynamics of color afterimages.Fil: Paz Filgueira, Clemente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Investigación en Luz, Ambiente y Visión. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Investigación en Luz, Ambiente y Visión; Argentina. University of Illinois; Estados UnidosFil: Elliot, Sarah. Roosevelt University; Estados UnidosFil: Tan, Michael. University Of Illinois At Chicago; Estados UnidosFil: Cao, Dingcao. University of Illinois; Estados UnidosVision Sciences Society 18th Annual MeetingSt Pete BeachEstados UnidosVision Sciences SocietyAssociation for Research in Vision and Ophthalmology2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/272882Color AfterImages Determined in Non-Cardinal Color Axes; Vision Sciences Society 18th Annual Meeting; St Pete Beach; Estados Unidos; 2018; 581-581CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.visionsciences.org/programs/VSS_2018_Abstracts.pdfinfo:eu-repo/semantics/altIdentifier/doi/10.1167/18.10.581Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:14:09Zoai:ri.conicet.gov.ar:11336/272882instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:14:09.899CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Color AfterImages Determined in Non-Cardinal Color Axes
title Color AfterImages Determined in Non-Cardinal Color Axes
spellingShingle Color AfterImages Determined in Non-Cardinal Color Axes
Paz Filgueira, Clemente
Color Afterimages
Postreceptoral pathways
Higher order mechanisms
Non-cardinal axes
title_short Color AfterImages Determined in Non-Cardinal Color Axes
title_full Color AfterImages Determined in Non-Cardinal Color Axes
title_fullStr Color AfterImages Determined in Non-Cardinal Color Axes
title_full_unstemmed Color AfterImages Determined in Non-Cardinal Color Axes
title_sort Color AfterImages Determined in Non-Cardinal Color Axes
dc.creator.none.fl_str_mv Paz Filgueira, Clemente
Elliot, Sarah
Tan, Michael
Cao, Dingcao
author Paz Filgueira, Clemente
author_facet Paz Filgueira, Clemente
Elliot, Sarah
Tan, Michael
Cao, Dingcao
author_role author
author2 Elliot, Sarah
Tan, Michael
Cao, Dingcao
author2_role author
author
author
dc.subject.none.fl_str_mv Color Afterimages
Postreceptoral pathways
Higher order mechanisms
Non-cardinal axes
topic Color Afterimages
Postreceptoral pathways
Higher order mechanisms
Non-cardinal axes
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.6
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Introduction: Complementary color afterimages appear after the removal of a bright stimulus from the visual field. Using a time-varying paradigm, Zaidi et al (Current Biology, 2012) found that adaptation within retinal ganglion cells may be sufficient to account for the appearance of color afterimages for stimuli modulating along the cardinal color axes of l (L/(L+M)) or s (S/(L+M)). The current study modulated stimuli along non-cardinal diagonal axes in MacLeod & Boynton cone chromaticity space to evaluate whether adaptation within higher order mechanisms contributes to color afterimages. Methods: Subjects (3 males and 3 females) were presented stimuli consisting of two hemidisks subtending 3.6° on an equal energy white (EEW) background (20 cd/m2). The colors of the hemidisks were modulated complementarily by sinusoidal half-cycles (1/32 Hz) along one of five axes: (1) L+M+S, (2) l, (3) s, and two non-cardinal axes that modulated l and s simultaneously with the same contrasts as those modulations along the cardinal axes. The task of the observers was to indicate the time at which the two semicircles appeared the same shade of gray (identity point) using a face clock. For each axis, we tested four contrasts (L+M+S: 12.5%-50%; l: 2.9%-6.5%; s: 35%-80%). Results: The time to reach the identity point increased linearly with stimulus contrast for all axes. The identity point was reached faster for stimuli along s-axis than for the non-cardinal axes under the same s-contrasts, whereas no difference was found between the non-cardinal and the l axes under the same l contrast. Conclusions. The time-varying afterimage for stimuli modulated along the non-cardinal color axes was determined by the cardinal mechanism with slower adaptation. This evidence indicates that adaptation within retinal ganglion cells is sufficient to account for the dynamics of color afterimages.
Fil: Paz Filgueira, Clemente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Investigación en Luz, Ambiente y Visión. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Investigación en Luz, Ambiente y Visión; Argentina. University of Illinois; Estados Unidos
Fil: Elliot, Sarah. Roosevelt University; Estados Unidos
Fil: Tan, Michael. University Of Illinois At Chicago; Estados Unidos
Fil: Cao, Dingcao. University of Illinois; Estados Unidos
Vision Sciences Society 18th Annual Meeting
St Pete Beach
Estados Unidos
Vision Sciences Society
description Introduction: Complementary color afterimages appear after the removal of a bright stimulus from the visual field. Using a time-varying paradigm, Zaidi et al (Current Biology, 2012) found that adaptation within retinal ganglion cells may be sufficient to account for the appearance of color afterimages for stimuli modulating along the cardinal color axes of l (L/(L+M)) or s (S/(L+M)). The current study modulated stimuli along non-cardinal diagonal axes in MacLeod & Boynton cone chromaticity space to evaluate whether adaptation within higher order mechanisms contributes to color afterimages. Methods: Subjects (3 males and 3 females) were presented stimuli consisting of two hemidisks subtending 3.6° on an equal energy white (EEW) background (20 cd/m2). The colors of the hemidisks were modulated complementarily by sinusoidal half-cycles (1/32 Hz) along one of five axes: (1) L+M+S, (2) l, (3) s, and two non-cardinal axes that modulated l and s simultaneously with the same contrasts as those modulations along the cardinal axes. The task of the observers was to indicate the time at which the two semicircles appeared the same shade of gray (identity point) using a face clock. For each axis, we tested four contrasts (L+M+S: 12.5%-50%; l: 2.9%-6.5%; s: 35%-80%). Results: The time to reach the identity point increased linearly with stimulus contrast for all axes. The identity point was reached faster for stimuli along s-axis than for the non-cardinal axes under the same s-contrasts, whereas no difference was found between the non-cardinal and the l axes under the same l contrast. Conclusions. The time-varying afterimage for stimuli modulated along the non-cardinal color axes was determined by the cardinal mechanism with slower adaptation. This evidence indicates that adaptation within retinal ganglion cells is sufficient to account for the dynamics of color afterimages.
publishDate 2018
dc.date.none.fl_str_mv 2018
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status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/272882
Color AfterImages Determined in Non-Cardinal Color Axes; Vision Sciences Society 18th Annual Meeting; St Pete Beach; Estados Unidos; 2018; 581-581
CONICET Digital
CONICET
url http://hdl.handle.net/11336/272882
identifier_str_mv Color AfterImages Determined in Non-Cardinal Color Axes; Vision Sciences Society 18th Annual Meeting; St Pete Beach; Estados Unidos; 2018; 581-581
CONICET Digital
CONICET
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language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.visionsciences.org/programs/VSS_2018_Abstracts.pdf
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publisher.none.fl_str_mv Association for Research in Vision and Ophthalmology
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