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How the Visual Cortex Handles Stimulus Noise: Insights from Amblyopia
Adding noise to a visual image makes object recognition more effortful and has a widespread effect on human electrophysiological responses. However, visual cortical processes directly involved in handling the stimulus noise have yet to be identified and dissociated from the modulation of the neural...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3688592/ https://www.ncbi.nlm.nih.gov/pubmed/23818947 http://dx.doi.org/10.1371/journal.pone.0066583 |
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author | Bankó, Éva M. Körtvélyes, Judit Weiss, Béla Vidnyánszky, Zoltán |
author_facet | Bankó, Éva M. Körtvélyes, Judit Weiss, Béla Vidnyánszky, Zoltán |
author_sort | Bankó, Éva M. |
collection | PubMed |
description | Adding noise to a visual image makes object recognition more effortful and has a widespread effect on human electrophysiological responses. However, visual cortical processes directly involved in handling the stimulus noise have yet to be identified and dissociated from the modulation of the neural responses due to the deteriorated structural information and increased stimulus uncertainty in the case of noisy images. Here we show that the impairment of face gender categorization performance in the case of noisy images in amblyopic patients correlates with amblyopic deficits measured in the noise-induced modulation of the P1/P2 components of single-trial event-related potentials (ERP). On the other hand, the N170 ERP component is similarly affected by the presence of noise in the two eyes and its modulation does not predict the behavioral deficit. These results have revealed that the efficient processing of noisy images depends on the engagement of additional processing resources both at the early, feature-specific as well as later, object-level stages of visual cortical processing reflected in the P1 and P2 ERP components, respectively. Our findings also suggest that noise-induced modulation of the N170 component might reflect diminished face-selective neuronal responses to face images with deteriorated structural information. |
format | Online Article Text |
id | pubmed-3688592 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-36885922013-07-01 How the Visual Cortex Handles Stimulus Noise: Insights from Amblyopia Bankó, Éva M. Körtvélyes, Judit Weiss, Béla Vidnyánszky, Zoltán PLoS One Research Article Adding noise to a visual image makes object recognition more effortful and has a widespread effect on human electrophysiological responses. However, visual cortical processes directly involved in handling the stimulus noise have yet to be identified and dissociated from the modulation of the neural responses due to the deteriorated structural information and increased stimulus uncertainty in the case of noisy images. Here we show that the impairment of face gender categorization performance in the case of noisy images in amblyopic patients correlates with amblyopic deficits measured in the noise-induced modulation of the P1/P2 components of single-trial event-related potentials (ERP). On the other hand, the N170 ERP component is similarly affected by the presence of noise in the two eyes and its modulation does not predict the behavioral deficit. These results have revealed that the efficient processing of noisy images depends on the engagement of additional processing resources both at the early, feature-specific as well as later, object-level stages of visual cortical processing reflected in the P1 and P2 ERP components, respectively. Our findings also suggest that noise-induced modulation of the N170 component might reflect diminished face-selective neuronal responses to face images with deteriorated structural information. Public Library of Science 2013-06-20 /pmc/articles/PMC3688592/ /pubmed/23818947 http://dx.doi.org/10.1371/journal.pone.0066583 Text en © 2013 Bankó et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Bankó, Éva M. Körtvélyes, Judit Weiss, Béla Vidnyánszky, Zoltán How the Visual Cortex Handles Stimulus Noise: Insights from Amblyopia |
title | How the Visual Cortex Handles Stimulus Noise: Insights from Amblyopia |
title_full | How the Visual Cortex Handles Stimulus Noise: Insights from Amblyopia |
title_fullStr | How the Visual Cortex Handles Stimulus Noise: Insights from Amblyopia |
title_full_unstemmed | How the Visual Cortex Handles Stimulus Noise: Insights from Amblyopia |
title_short | How the Visual Cortex Handles Stimulus Noise: Insights from Amblyopia |
title_sort | how the visual cortex handles stimulus noise: insights from amblyopia |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3688592/ https://www.ncbi.nlm.nih.gov/pubmed/23818947 http://dx.doi.org/10.1371/journal.pone.0066583 |
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