Interactions between surround suppression and interocular suppression in human vision.

Several types of suppression phenomena have been observed in the visual system. For example, the ability to detect a target stimulus is often impaired when the target is embedded in a high-contrast surround. This contextual modulation, known as surround suppression, was formerly thought to occur onl...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yong-Chun Cai, Shena Lu, Chao-Yi Li
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6332ede3991b4e63a02ca3642cfc5daa
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:6332ede3991b4e63a02ca3642cfc5daa
record_format	dspace
spelling	oai:doaj.org-article:6332ede3991b4e63a02ca3642cfc5daa2021-11-18T07:17:12ZInteractions between surround suppression and interocular suppression in human vision.1932-620310.1371/journal.pone.0038093https://doaj.org/article/6332ede3991b4e63a02ca3642cfc5daa2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22662270/?tool=EBIhttps://doaj.org/toc/1932-6203Several types of suppression phenomena have been observed in the visual system. For example, the ability to detect a target stimulus is often impaired when the target is embedded in a high-contrast surround. This contextual modulation, known as surround suppression, was formerly thought to occur only in the periphery. Another type of suppression phenomena is interocular suppression, in which the sensitivity to a monocular target is reduced by a superimposed mask in the opposite eye. Here, we explored how the two types of suppression operating across different spatial regions interact with one another when they simultaneously exert suppressive influences on a common target presented at the fovea. In our experiments, a circular target grating presented to the fovea of one eye was suppressed interocularly by a noise pattern of the same size in the other eye. The foveal stimuli were either shown alone or surrounded by a monocular annular grating. The orientation and eye-of-origin of the surround grating were varied. We found that the detection of the foveal target subjected to interocular suppression was severely impaired by the addition of the surround grating, indicating strong surround suppression in the fovea. In contrast, when the interocular suppression was released by superimposing a binocular fusion ring onto both the target and the dichoptic mask, the surround suppression effect was found to be dramatically decreased. In addition, the surround suppression was found to depend on the contrast of the dichoptic noise with the greatest surround suppression effect being obtained only when the noise contrast was at an intermediate level. These findings indicate that surround suppression and interocular suppression are not independent of each other, but there are strong interactions between them. Moreover, our results suggest that strong surround suppression may also occur at the fovea and not just the periphery.Yong-Chun CaiShena LuChao-Yi LiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 5, p e38093 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yong-Chun Cai Shena Lu Chao-Yi Li Interactions between surround suppression and interocular suppression in human vision.
description	Several types of suppression phenomena have been observed in the visual system. For example, the ability to detect a target stimulus is often impaired when the target is embedded in a high-contrast surround. This contextual modulation, known as surround suppression, was formerly thought to occur only in the periphery. Another type of suppression phenomena is interocular suppression, in which the sensitivity to a monocular target is reduced by a superimposed mask in the opposite eye. Here, we explored how the two types of suppression operating across different spatial regions interact with one another when they simultaneously exert suppressive influences on a common target presented at the fovea. In our experiments, a circular target grating presented to the fovea of one eye was suppressed interocularly by a noise pattern of the same size in the other eye. The foveal stimuli were either shown alone or surrounded by a monocular annular grating. The orientation and eye-of-origin of the surround grating were varied. We found that the detection of the foveal target subjected to interocular suppression was severely impaired by the addition of the surround grating, indicating strong surround suppression in the fovea. In contrast, when the interocular suppression was released by superimposing a binocular fusion ring onto both the target and the dichoptic mask, the surround suppression effect was found to be dramatically decreased. In addition, the surround suppression was found to depend on the contrast of the dichoptic noise with the greatest surround suppression effect being obtained only when the noise contrast was at an intermediate level. These findings indicate that surround suppression and interocular suppression are not independent of each other, but there are strong interactions between them. Moreover, our results suggest that strong surround suppression may also occur at the fovea and not just the periphery.
format	article
author	Yong-Chun Cai Shena Lu Chao-Yi Li
author_facet	Yong-Chun Cai Shena Lu Chao-Yi Li
author_sort	Yong-Chun Cai
title	Interactions between surround suppression and interocular suppression in human vision.
title_short	Interactions between surround suppression and interocular suppression in human vision.
title_full	Interactions between surround suppression and interocular suppression in human vision.
title_fullStr	Interactions between surround suppression and interocular suppression in human vision.
title_full_unstemmed	Interactions between surround suppression and interocular suppression in human vision.
title_sort	interactions between surround suppression and interocular suppression in human vision.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/6332ede3991b4e63a02ca3642cfc5daa
work_keys_str_mv	AT yongchuncai interactionsbetweensurroundsuppressionandinterocularsuppressioninhumanvision AT shenalu interactionsbetweensurroundsuppressionandinterocularsuppressioninhumanvision AT chaoyili interactionsbetweensurroundsuppressionandinterocularsuppressioninhumanvision
_version_	1718423667813122048

Interactions between surround suppression and interocular suppression in human vision.

Ejemplares similares