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Decline of Orientation and Direction Sensitivity in the Aging Population

While the aging population is growing, our knowledge regarding age-related deterioration of visual perception remains limited. In the present study, we investigated the effects of aging on orientation and direction sensitivity in a healthy population using a weighted up–down adaptive method to impro...

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Detalles Bibliográficos
Autores principales: Xia, Lin, Chen, He, Dong, Jiong, Luo, Sha, Feng, Lixia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8064032/
https://www.ncbi.nlm.nih.gov/pubmed/33897356
http://dx.doi.org/10.3389/fnins.2021.643414
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author Xia, Lin
Chen, He
Dong, Jiong
Luo, Sha
Feng, Lixia
author_facet Xia, Lin
Chen, He
Dong, Jiong
Luo, Sha
Feng, Lixia
author_sort Xia, Lin
collection PubMed
description While the aging population is growing, our knowledge regarding age-related deterioration of visual perception remains limited. In the present study, we investigated the effects of aging on orientation and direction sensitivity in a healthy population using a weighted up–down adaptive method to improve the efficiency and reliability of the task. A total of 57 healthy participants aged 22–72 years were included and divided into old and young groups. Raw experimental data were processed using a psychometric method to determine the differences between the two groups. In the orientation task, the threshold of the discrimination angle and bias (i.e., the difference between the perceived midpoint from the logistic function and the reference point) was increased, while the lapsing rate (i.e., 1—the maximum logistic function) did not significantly change in the old group compared with the young group. In the motion direction task, the threshold, bias, and lapsing rate were significantly increased in the old group compared with the young group. These results suggest that the decreased ability of old participants in discrimination of stimulus orientation and motion direction could be related to the impaired function of visual cortex.
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spelling pubmed-80640322021-04-24 Decline of Orientation and Direction Sensitivity in the Aging Population Xia, Lin Chen, He Dong, Jiong Luo, Sha Feng, Lixia Front Neurosci Neuroscience While the aging population is growing, our knowledge regarding age-related deterioration of visual perception remains limited. In the present study, we investigated the effects of aging on orientation and direction sensitivity in a healthy population using a weighted up–down adaptive method to improve the efficiency and reliability of the task. A total of 57 healthy participants aged 22–72 years were included and divided into old and young groups. Raw experimental data were processed using a psychometric method to determine the differences between the two groups. In the orientation task, the threshold of the discrimination angle and bias (i.e., the difference between the perceived midpoint from the logistic function and the reference point) was increased, while the lapsing rate (i.e., 1—the maximum logistic function) did not significantly change in the old group compared with the young group. In the motion direction task, the threshold, bias, and lapsing rate were significantly increased in the old group compared with the young group. These results suggest that the decreased ability of old participants in discrimination of stimulus orientation and motion direction could be related to the impaired function of visual cortex. Frontiers Media S.A. 2021-04-07 /pmc/articles/PMC8064032/ /pubmed/33897356 http://dx.doi.org/10.3389/fnins.2021.643414 Text en Copyright © 2021 Xia, Chen, Dong, Luo and Feng. https://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 Neuroscience
Xia, Lin
Chen, He
Dong, Jiong
Luo, Sha
Feng, Lixia
Decline of Orientation and Direction Sensitivity in the Aging Population
title Decline of Orientation and Direction Sensitivity in the Aging Population
title_full Decline of Orientation and Direction Sensitivity in the Aging Population
title_fullStr Decline of Orientation and Direction Sensitivity in the Aging Population
title_full_unstemmed Decline of Orientation and Direction Sensitivity in the Aging Population
title_short Decline of Orientation and Direction Sensitivity in the Aging Population
title_sort decline of orientation and direction sensitivity in the aging population
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8064032/
https://www.ncbi.nlm.nih.gov/pubmed/33897356
http://dx.doi.org/10.3389/fnins.2021.643414
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