Cargando…

Parallel Adaptation to Spatially Distinct Distortions

Optical distortions as a visual disturbance are inherent in many optical devices such as spectacles or virtual reality headsets. In such devices, distortions vary spatially across the visual field. In progressive addition lenses, for example, the left and right regions of the lens skew the periphera...

Descripción completa

Detalles Bibliográficos
Autores principales: Sauer, Yannick, Wahl, Siegfried, Rifai, Katharina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7715010/
https://www.ncbi.nlm.nih.gov/pubmed/33329178
http://dx.doi.org/10.3389/fpsyg.2020.544867
_version_ 1783618854040109056
author Sauer, Yannick
Wahl, Siegfried
Rifai, Katharina
author_facet Sauer, Yannick
Wahl, Siegfried
Rifai, Katharina
author_sort Sauer, Yannick
collection PubMed
description Optical distortions as a visual disturbance are inherent in many optical devices such as spectacles or virtual reality headsets. In such devices, distortions vary spatially across the visual field. In progressive addition lenses, for example, the left and right regions of the lens skew the peripheral parts of the wearers visual field in opposing directions. The human visual system adapts to homogeneous distortions and the respective aftereffects are transferred to non-retinotopic locations. This study investigates simultaneous adaptation to two opposing distortions at different retinotopic locations. Two oppositely skewed natural image sequences were presented to 10 subjects as adaptation stimuli at two distinct locations in the visual field. To do so, subjects were instructed to keep fixation on a target. Eye tracking was used for gaze control. Change of perceived motion direction was measured in a direction identification task. The point of subjective equality (PSE), that is, the angle at which a group of coherently moving dots was perceived as moving horizontal, was determined for both retinal locations. The shift of perceived motion direction was evaluated by comparing PSE before and after adaptation. A significant shift at both retinal locations in the direction of the skew distortion of the corresponding adaptation stimulus is demonstrated. Consequently, parallel adaptation to two opposing distortions in a retinotopic reference frame was confirmed by this study.
format Online
Article
Text
id pubmed-7715010
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-77150102020-12-15 Parallel Adaptation to Spatially Distinct Distortions Sauer, Yannick Wahl, Siegfried Rifai, Katharina Front Psychol Psychology Optical distortions as a visual disturbance are inherent in many optical devices such as spectacles or virtual reality headsets. In such devices, distortions vary spatially across the visual field. In progressive addition lenses, for example, the left and right regions of the lens skew the peripheral parts of the wearers visual field in opposing directions. The human visual system adapts to homogeneous distortions and the respective aftereffects are transferred to non-retinotopic locations. This study investigates simultaneous adaptation to two opposing distortions at different retinotopic locations. Two oppositely skewed natural image sequences were presented to 10 subjects as adaptation stimuli at two distinct locations in the visual field. To do so, subjects were instructed to keep fixation on a target. Eye tracking was used for gaze control. Change of perceived motion direction was measured in a direction identification task. The point of subjective equality (PSE), that is, the angle at which a group of coherently moving dots was perceived as moving horizontal, was determined for both retinal locations. The shift of perceived motion direction was evaluated by comparing PSE before and after adaptation. A significant shift at both retinal locations in the direction of the skew distortion of the corresponding adaptation stimulus is demonstrated. Consequently, parallel adaptation to two opposing distortions in a retinotopic reference frame was confirmed by this study. Frontiers Media S.A. 2020-11-20 /pmc/articles/PMC7715010/ /pubmed/33329178 http://dx.doi.org/10.3389/fpsyg.2020.544867 Text en Copyright © 2020 Sauer, Wahl and Rifai. 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) and the copyright owner(s) 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
Sauer, Yannick
Wahl, Siegfried
Rifai, Katharina
Parallel Adaptation to Spatially Distinct Distortions
title Parallel Adaptation to Spatially Distinct Distortions
title_full Parallel Adaptation to Spatially Distinct Distortions
title_fullStr Parallel Adaptation to Spatially Distinct Distortions
title_full_unstemmed Parallel Adaptation to Spatially Distinct Distortions
title_short Parallel Adaptation to Spatially Distinct Distortions
title_sort parallel adaptation to spatially distinct distortions
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7715010/
https://www.ncbi.nlm.nih.gov/pubmed/33329178
http://dx.doi.org/10.3389/fpsyg.2020.544867
work_keys_str_mv AT saueryannick paralleladaptationtospatiallydistinctdistortions
AT wahlsiegfried paralleladaptationtospatiallydistinctdistortions
AT rifaikatharina paralleladaptationtospatiallydistinctdistortions