Cargando…

Dependence of perceptual saccadic suppression on peri-saccadic image flow properties and luminance contrast polarity

Across saccades, perceptual detectability of brief visual stimuli is strongly diminished. We recently observed that this perceptual suppression phenomenon is jumpstarted in the retina, suggesting that the phenomenon might be significantly more visual in nature than normally acknowledged. Here, we ex...

Descripción completa

Detalles Bibliográficos
Autores principales: Baumann, Matthias P., Idrees, Saad, Münch, Thomas A., Hafed, Ziad M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Association for Research in Vision and Ophthalmology 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8131999/
https://www.ncbi.nlm.nih.gov/pubmed/34003243
http://dx.doi.org/10.1167/jov.21.5.15
_version_ 1783694828110872576
author Baumann, Matthias P.
Idrees, Saad
Münch, Thomas A.
Hafed, Ziad M.
author_facet Baumann, Matthias P.
Idrees, Saad
Münch, Thomas A.
Hafed, Ziad M.
author_sort Baumann, Matthias P.
collection PubMed
description Across saccades, perceptual detectability of brief visual stimuli is strongly diminished. We recently observed that this perceptual suppression phenomenon is jumpstarted in the retina, suggesting that the phenomenon might be significantly more visual in nature than normally acknowledged. Here, we explicitly compared saccadic suppression strength when saccades were made across a uniform image of constant luminance versus when saccades were made across image patches of different luminance, width, and trans-saccadic luminance polarity. We measured perceptual contrast thresholds of human subjects for brief peri-saccadic flashes of positive (luminance increments) or negative (luminance decrements) polarity. Thresholds were >6–7 times higher when saccades translated a luminance stripe or edge across the retina than when saccades were made over a completely uniform image patch. Critically, both background luminance and flash luminance polarity strongly modulated peri-saccadic contrast thresholds. In addition, all of these very same visual dependencies also occurred in the absence of any saccades, but with qualitatively similar rapid translations of image patches across the retina. This similarity of visual dependencies with and without saccades supports the notion that perceptual saccadic suppression may be fundamentally a visual phenomenon, which strongly motivates neurophysiological and theoretical investigations on the role of saccadic eye movement commands in modulating its properties.
format Online
Article
Text
id pubmed-8131999
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher The Association for Research in Vision and Ophthalmology
record_format MEDLINE/PubMed
spelling pubmed-81319992021-05-24 Dependence of perceptual saccadic suppression on peri-saccadic image flow properties and luminance contrast polarity Baumann, Matthias P. Idrees, Saad Münch, Thomas A. Hafed, Ziad M. J Vis Article Across saccades, perceptual detectability of brief visual stimuli is strongly diminished. We recently observed that this perceptual suppression phenomenon is jumpstarted in the retina, suggesting that the phenomenon might be significantly more visual in nature than normally acknowledged. Here, we explicitly compared saccadic suppression strength when saccades were made across a uniform image of constant luminance versus when saccades were made across image patches of different luminance, width, and trans-saccadic luminance polarity. We measured perceptual contrast thresholds of human subjects for brief peri-saccadic flashes of positive (luminance increments) or negative (luminance decrements) polarity. Thresholds were >6–7 times higher when saccades translated a luminance stripe or edge across the retina than when saccades were made over a completely uniform image patch. Critically, both background luminance and flash luminance polarity strongly modulated peri-saccadic contrast thresholds. In addition, all of these very same visual dependencies also occurred in the absence of any saccades, but with qualitatively similar rapid translations of image patches across the retina. This similarity of visual dependencies with and without saccades supports the notion that perceptual saccadic suppression may be fundamentally a visual phenomenon, which strongly motivates neurophysiological and theoretical investigations on the role of saccadic eye movement commands in modulating its properties. The Association for Research in Vision and Ophthalmology 2021-05-17 /pmc/articles/PMC8131999/ /pubmed/34003243 http://dx.doi.org/10.1167/jov.21.5.15 Text en Copyright 2021 The Authors https://creativecommons.org/licenses/by/4.0/This work is licensed under a Creative Commons Attribution 4.0 International License.
spellingShingle Article
Baumann, Matthias P.
Idrees, Saad
Münch, Thomas A.
Hafed, Ziad M.
Dependence of perceptual saccadic suppression on peri-saccadic image flow properties and luminance contrast polarity
title Dependence of perceptual saccadic suppression on peri-saccadic image flow properties and luminance contrast polarity
title_full Dependence of perceptual saccadic suppression on peri-saccadic image flow properties and luminance contrast polarity
title_fullStr Dependence of perceptual saccadic suppression on peri-saccadic image flow properties and luminance contrast polarity
title_full_unstemmed Dependence of perceptual saccadic suppression on peri-saccadic image flow properties and luminance contrast polarity
title_short Dependence of perceptual saccadic suppression on peri-saccadic image flow properties and luminance contrast polarity
title_sort dependence of perceptual saccadic suppression on peri-saccadic image flow properties and luminance contrast polarity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8131999/
https://www.ncbi.nlm.nih.gov/pubmed/34003243
http://dx.doi.org/10.1167/jov.21.5.15
work_keys_str_mv AT baumannmatthiasp dependenceofperceptualsaccadicsuppressiononperisaccadicimageflowpropertiesandluminancecontrastpolarity
AT idreessaad dependenceofperceptualsaccadicsuppressiononperisaccadicimageflowpropertiesandluminancecontrastpolarity
AT munchthomasa dependenceofperceptualsaccadicsuppressiononperisaccadicimageflowpropertiesandluminancecontrastpolarity
AT hafedziadm dependenceofperceptualsaccadicsuppressiononperisaccadicimageflowpropertiesandluminancecontrastpolarity