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Adaptation to Skew Distortions of Natural Scenes and Retinal Specificity of Its Aftereffects
Image skew is one of the prominent distortions that exist in optical elements, such as in spectacle lenses. The present study evaluates adaptation to image skew in dynamic natural images. Moreover, the cortical levels involved in skew coding were probed using retinal specificity of skew adaptation a...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5508008/ https://www.ncbi.nlm.nih.gov/pubmed/28751870 http://dx.doi.org/10.3389/fpsyg.2017.01158 |
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author | Habtegiorgis, Selam W. Rifai, Katharina Lappe, Markus Wahl, Siegfried |
author_facet | Habtegiorgis, Selam W. Rifai, Katharina Lappe, Markus Wahl, Siegfried |
author_sort | Habtegiorgis, Selam W. |
collection | PubMed |
description | Image skew is one of the prominent distortions that exist in optical elements, such as in spectacle lenses. The present study evaluates adaptation to image skew in dynamic natural images. Moreover, the cortical levels involved in skew coding were probed using retinal specificity of skew adaptation aftereffects. Left and right skewed natural image sequences were shown to observers as adapting stimuli. The point of subjective equality (PSE), i.e., the skew amplitude in simple geometrical patterns that is perceived to be unskewed, was used to quantify the aftereffect of each adapting skew direction. The PSE, in a two-alternative forced choice paradigm, shifted toward the adapting skew direction. Moreover, significant adaptation aftereffects were obtained not only at adapted, but also at non-adapted retinal locations during fixation. Skew adaptation information was transferred partially to non-adapted retinal locations. Thus, adaptation to skewed natural scenes induces coordinated plasticity in lower and higher cortical areas of the visual pathway. |
format | Online Article Text |
id | pubmed-5508008 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-55080082017-07-27 Adaptation to Skew Distortions of Natural Scenes and Retinal Specificity of Its Aftereffects Habtegiorgis, Selam W. Rifai, Katharina Lappe, Markus Wahl, Siegfried Front Psychol Psychology Image skew is one of the prominent distortions that exist in optical elements, such as in spectacle lenses. The present study evaluates adaptation to image skew in dynamic natural images. Moreover, the cortical levels involved in skew coding were probed using retinal specificity of skew adaptation aftereffects. Left and right skewed natural image sequences were shown to observers as adapting stimuli. The point of subjective equality (PSE), i.e., the skew amplitude in simple geometrical patterns that is perceived to be unskewed, was used to quantify the aftereffect of each adapting skew direction. The PSE, in a two-alternative forced choice paradigm, shifted toward the adapting skew direction. Moreover, significant adaptation aftereffects were obtained not only at adapted, but also at non-adapted retinal locations during fixation. Skew adaptation information was transferred partially to non-adapted retinal locations. Thus, adaptation to skewed natural scenes induces coordinated plasticity in lower and higher cortical areas of the visual pathway. Frontiers Media S.A. 2017-07-13 /pmc/articles/PMC5508008/ /pubmed/28751870 http://dx.doi.org/10.3389/fpsyg.2017.01158 Text en Copyright © 2017 Habtegiorgis, Rifai, Lappe and Wahl. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Psychology Habtegiorgis, Selam W. Rifai, Katharina Lappe, Markus Wahl, Siegfried Adaptation to Skew Distortions of Natural Scenes and Retinal Specificity of Its Aftereffects |
title | Adaptation to Skew Distortions of Natural Scenes and Retinal Specificity of Its Aftereffects |
title_full | Adaptation to Skew Distortions of Natural Scenes and Retinal Specificity of Its Aftereffects |
title_fullStr | Adaptation to Skew Distortions of Natural Scenes and Retinal Specificity of Its Aftereffects |
title_full_unstemmed | Adaptation to Skew Distortions of Natural Scenes and Retinal Specificity of Its Aftereffects |
title_short | Adaptation to Skew Distortions of Natural Scenes and Retinal Specificity of Its Aftereffects |
title_sort | adaptation to skew distortions of natural scenes and retinal specificity of its aftereffects |
topic | Psychology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5508008/ https://www.ncbi.nlm.nih.gov/pubmed/28751870 http://dx.doi.org/10.3389/fpsyg.2017.01158 |
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