A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation

Autores
Gloriani, Alejandro; Matezanz, Beatriz; Barrionuevo, Pablo Alejandro; Arranz, Isabel; Issolio, Luis Alberto; Mar, Santiago; Aparicio, Juan Antonio
Año de publicación
2015
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The understanding of the mechanisms involved in light adaptation is a challenge not completely solved. Here, we present a model based on visual mechanisms described in the physiological and psychophysical literature able to fit psychophysical data in several stimuli conditions. We propose that the study of changes in the different mechanism and phenomena considered in our model could be a strategy to better understand light adaptation. We used a two-channel Maxwellian view optical system to measure detection luminance thresholds with the method of limits for steady and transient (SOA300) backgrounds field. With data for different retinal eccentricities (0°-15°), and adaptation luminances (0.06-110 cd/m2), preliminary results of this model were reported in a previous ICVS meeting. In this occasion we performed new measurements considering different combinations of background/test size, 10°/2°, 10°/0.45° and 1°/0.45°, and a final version of the model is presented. For steady backgrounds we describe how spatial summation changes with eccentricity and we associate this behaviour with increases in the receptive field sizes. We report changes in subtractive adaptation with both eccentricity and background field size and we connect these changes with horizontal cells and changes in their dendritic field size with eccentricity. Additionally, when we reduce the background field size, we propose that the increase in the thresholds is related with rod-cone interactions and photon noise. For transient backgrounds, we show how the gradual shift in the site of the gain control can explain the data. Finally, we believe this strategy is an interesting way to better understand the behaviour of the different visual mechanisms and phenomena involved in retinal light adaptation.
Fil: Gloriani, Alejandro. Universidad de Valladolid. Facultad de Ciencias; España
Fil: Matezanz, Beatriz. Universidad de Valladolid. Facultad de Ciencias; España
Fil: Barrionuevo, Pablo Alejandro. 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: Arranz, Isabel. Universidad de Valladolid. Facultad de Ciencias; España
Fil: Issolio, Luis Alberto. 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. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Luminotecnia, Luz y Visión; Argentina
Fil: Mar, Santiago. Universidad de Valladolid. Facultad de Ciencias; España
Fil: Aparicio, Juan Antonio. Universidad de Valladolid. Facultad de Ciencias; España
The 23rd Symposium of the International Colour Vision Society
Sendai
Japón
International Colour Vision Society
Materia
LIGHT ADAPTATION
PERIPHERAL VISION
MESOPIC
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:11336/273428
Acceder
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spelling A model for foveal and parafoveal sensitivity that could help our understanding about light adaptationGloriani, AlejandroMatezanz, BeatrizBarrionuevo, Pablo AlejandroArranz, IsabelIssolio, Luis AlbertoMar, SantiagoAparicio, Juan AntonioLIGHT ADAPTATIONPERIPHERAL VISIONMESOPIChttps://purl.org/becyt/ford/2.6https://purl.org/becyt/ford/2The understanding of the mechanisms involved in light adaptation is a challenge not completely solved. Here, we present a model based on visual mechanisms described in the physiological and psychophysical literature able to fit psychophysical data in several stimuli conditions. We propose that the study of changes in the different mechanism and phenomena considered in our model could be a strategy to better understand light adaptation. We used a two-channel Maxwellian view optical system to measure detection luminance thresholds with the method of limits for steady and transient (SOA300) backgrounds field. With data for different retinal eccentricities (0°-15°), and adaptation luminances (0.06-110 cd/m2), preliminary results of this model were reported in a previous ICVS meeting. In this occasion we performed new measurements considering different combinations of background/test size, 10°/2°, 10°/0.45° and 1°/0.45°, and a final version of the model is presented. For steady backgrounds we describe how spatial summation changes with eccentricity and we associate this behaviour with increases in the receptive field sizes. We report changes in subtractive adaptation with both eccentricity and background field size and we connect these changes with horizontal cells and changes in their dendritic field size with eccentricity. Additionally, when we reduce the background field size, we propose that the increase in the thresholds is related with rod-cone interactions and photon noise. For transient backgrounds, we show how the gradual shift in the site of the gain control can explain the data. Finally, we believe this strategy is an interesting way to better understand the behaviour of the different visual mechanisms and phenomena involved in retinal light adaptation.Fil: Gloriani, Alejandro. Universidad de Valladolid. Facultad de Ciencias; EspañaFil: Matezanz, Beatriz. Universidad de Valladolid. Facultad de Ciencias; EspañaFil: Barrionuevo, Pablo Alejandro. 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: Arranz, Isabel. Universidad de Valladolid. Facultad de Ciencias; EspañaFil: Issolio, Luis Alberto. 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. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Luminotecnia, Luz y Visión; ArgentinaFil: Mar, Santiago. Universidad de Valladolid. Facultad de Ciencias; EspañaFil: Aparicio, Juan Antonio. Universidad de Valladolid. Facultad de Ciencias; EspañaThe 23rd Symposium of the International Colour Vision SocietySendaiJapónInternational Colour Vision SocietyTohoku University2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectSimposioBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/273428A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation; The 23rd Symposium of the International Colour Vision Society; Sendai; Japón; 2015; 66-66978-4-9908469-0-9CONICET DigitalCONICETengInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:23:22Zoai:ri.conicet.gov.ar:11336/273428instacron: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:34982025-10-22 11:23:23.088CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation
title A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation
spellingShingle A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation
Gloriani, Alejandro
LIGHT ADAPTATION
PERIPHERAL VISION
MESOPIC
title_short A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation
title_full A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation
title_fullStr A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation
title_full_unstemmed A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation
title_sort A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation
dc.creator.none.fl_str_mv Gloriani, Alejandro
Matezanz, Beatriz
Barrionuevo, Pablo Alejandro
Arranz, Isabel
Issolio, Luis Alberto
Mar, Santiago
Aparicio, Juan Antonio
author Gloriani, Alejandro
author_facet Gloriani, Alejandro
Matezanz, Beatriz
Barrionuevo, Pablo Alejandro
Arranz, Isabel
Issolio, Luis Alberto
Mar, Santiago
Aparicio, Juan Antonio
author_role author
author2 Matezanz, Beatriz
Barrionuevo, Pablo Alejandro
Arranz, Isabel
Issolio, Luis Alberto
Mar, Santiago
Aparicio, Juan Antonio
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv LIGHT ADAPTATION
PERIPHERAL VISION
MESOPIC
topic LIGHT ADAPTATION
PERIPHERAL VISION
MESOPIC
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.6
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The understanding of the mechanisms involved in light adaptation is a challenge not completely solved. Here, we present a model based on visual mechanisms described in the physiological and psychophysical literature able to fit psychophysical data in several stimuli conditions. We propose that the study of changes in the different mechanism and phenomena considered in our model could be a strategy to better understand light adaptation. We used a two-channel Maxwellian view optical system to measure detection luminance thresholds with the method of limits for steady and transient (SOA300) backgrounds field. With data for different retinal eccentricities (0°-15°), and adaptation luminances (0.06-110 cd/m2), preliminary results of this model were reported in a previous ICVS meeting. In this occasion we performed new measurements considering different combinations of background/test size, 10°/2°, 10°/0.45° and 1°/0.45°, and a final version of the model is presented. For steady backgrounds we describe how spatial summation changes with eccentricity and we associate this behaviour with increases in the receptive field sizes. We report changes in subtractive adaptation with both eccentricity and background field size and we connect these changes with horizontal cells and changes in their dendritic field size with eccentricity. Additionally, when we reduce the background field size, we propose that the increase in the thresholds is related with rod-cone interactions and photon noise. For transient backgrounds, we show how the gradual shift in the site of the gain control can explain the data. Finally, we believe this strategy is an interesting way to better understand the behaviour of the different visual mechanisms and phenomena involved in retinal light adaptation.
Fil: Gloriani, Alejandro. Universidad de Valladolid. Facultad de Ciencias; España
Fil: Matezanz, Beatriz. Universidad de Valladolid. Facultad de Ciencias; España
Fil: Barrionuevo, Pablo Alejandro. 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: Arranz, Isabel. Universidad de Valladolid. Facultad de Ciencias; España
Fil: Issolio, Luis Alberto. 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. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Luminotecnia, Luz y Visión; Argentina
Fil: Mar, Santiago. Universidad de Valladolid. Facultad de Ciencias; España
Fil: Aparicio, Juan Antonio. Universidad de Valladolid. Facultad de Ciencias; España
The 23rd Symposium of the International Colour Vision Society
Sendai
Japón
International Colour Vision Society
description The understanding of the mechanisms involved in light adaptation is a challenge not completely solved. Here, we present a model based on visual mechanisms described in the physiological and psychophysical literature able to fit psychophysical data in several stimuli conditions. We propose that the study of changes in the different mechanism and phenomena considered in our model could be a strategy to better understand light adaptation. We used a two-channel Maxwellian view optical system to measure detection luminance thresholds with the method of limits for steady and transient (SOA300) backgrounds field. With data for different retinal eccentricities (0°-15°), and adaptation luminances (0.06-110 cd/m2), preliminary results of this model were reported in a previous ICVS meeting. In this occasion we performed new measurements considering different combinations of background/test size, 10°/2°, 10°/0.45° and 1°/0.45°, and a final version of the model is presented. For steady backgrounds we describe how spatial summation changes with eccentricity and we associate this behaviour with increases in the receptive field sizes. We report changes in subtractive adaptation with both eccentricity and background field size and we connect these changes with horizontal cells and changes in their dendritic field size with eccentricity. Additionally, when we reduce the background field size, we propose that the increase in the thresholds is related with rod-cone interactions and photon noise. For transient backgrounds, we show how the gradual shift in the site of the gain control can explain the data. Finally, we believe this strategy is an interesting way to better understand the behaviour of the different visual mechanisms and phenomena involved in retinal light adaptation.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Simposio
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/11336/273428
A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation; The 23rd Symposium of the International Colour Vision Society; Sendai; Japón; 2015; 66-66
978-4-9908469-0-9
CONICET Digital
CONICET
url http://hdl.handle.net/11336/273428
identifier_str_mv A model for foveal and parafoveal sensitivity that could help our understanding about light adaptation; The 23rd Symposium of the International Colour Vision Society; Sendai; Japón; 2015; 66-66
978-4-9908469-0-9
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Tohoku University
publisher.none.fl_str_mv Tohoku University
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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