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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/272882
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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 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Congreso Book http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
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 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.visionsciences.org/programs/VSS_2018_Abstracts.pdf info:eu-repo/semantics/altIdentifier/doi/10.1167/18.10.581 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf |
dc.coverage.none.fl_str_mv |
Internacional |
dc.publisher.none.fl_str_mv |
Association for Research in Vision and Ophthalmology |
publisher.none.fl_str_mv |
Association for Research in Vision and Ophthalmology |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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