The relationship between reflex eye realignment and the percept of single vision in young children

Abstract Effective binocular vision is dependent on both motor and perceptual function. Young children undergo development of both components while interacting with their dynamic three-dimensional environment. When this development fails, eye misalignment and double vision may result. We compared th...

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Autores principales:	Kimberly Meier, Deanna L. Lundell, Eric S. Seemiller, Deborah Giaschi, Laurie M. Wilcox, T. Rowan Candy
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9e081fbac50a46d2acb13d90674dd62a
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spelling	oai:doaj.org-article:9e081fbac50a46d2acb13d90674dd62a2021-12-02T14:12:08ZThe relationship between reflex eye realignment and the percept of single vision in young children10.1038/s41598-020-78636-02045-2322https://doaj.org/article/9e081fbac50a46d2acb13d90674dd62a2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78636-0https://doaj.org/toc/2045-2322Abstract Effective binocular vision is dependent on both motor and perceptual function. Young children undergo development of both components while interacting with their dynamic three-dimensional environment. When this development fails, eye misalignment and double vision may result. We compared the range of image disparities over which young children display reflex motor realignment of their eyes with the range over which they report a single versus double percept. In response to step changes in the disparity of a 2.2° wide stimulus, 5-year-olds generated an adult-like reflex vergence velocity tuning function peaking at 2° of disparity, with a mean latency of 210 ms. On average, they reported double vision for stimulus disparities of 3° and larger, compared to 1° in adult reports. Three-year-olds also generated reflex vergence tuning functions peaking at approximately 2° of disparity, but their percepts could not be assessed. These data suggest that, by age 5, reflex eye realignment responses and percepts driven by these brief stimuli are tightly coordinated in space and time to permit robust binocular function around the point of fixation. Importantly, the plastic neural processes maintaining this tight coordination during growth control the stability of visual information driving learning during childhood.Kimberly MeierDeanna L. LundellEric S. SeemillerDeborah GiaschiLaurie M. WilcoxT. Rowan CandyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kimberly Meier Deanna L. Lundell Eric S. Seemiller Deborah Giaschi Laurie M. Wilcox T. Rowan Candy The relationship between reflex eye realignment and the percept of single vision in young children
description	Abstract Effective binocular vision is dependent on both motor and perceptual function. Young children undergo development of both components while interacting with their dynamic three-dimensional environment. When this development fails, eye misalignment and double vision may result. We compared the range of image disparities over which young children display reflex motor realignment of their eyes with the range over which they report a single versus double percept. In response to step changes in the disparity of a 2.2° wide stimulus, 5-year-olds generated an adult-like reflex vergence velocity tuning function peaking at 2° of disparity, with a mean latency of 210 ms. On average, they reported double vision for stimulus disparities of 3° and larger, compared to 1° in adult reports. Three-year-olds also generated reflex vergence tuning functions peaking at approximately 2° of disparity, but their percepts could not be assessed. These data suggest that, by age 5, reflex eye realignment responses and percepts driven by these brief stimuli are tightly coordinated in space and time to permit robust binocular function around the point of fixation. Importantly, the plastic neural processes maintaining this tight coordination during growth control the stability of visual information driving learning during childhood.
format	article
author	Kimberly Meier Deanna L. Lundell Eric S. Seemiller Deborah Giaschi Laurie M. Wilcox T. Rowan Candy
author_facet	Kimberly Meier Deanna L. Lundell Eric S. Seemiller Deborah Giaschi Laurie M. Wilcox T. Rowan Candy
author_sort	Kimberly Meier
title	The relationship between reflex eye realignment and the percept of single vision in young children
title_short	The relationship between reflex eye realignment and the percept of single vision in young children
title_full	The relationship between reflex eye realignment and the percept of single vision in young children
title_fullStr	The relationship between reflex eye realignment and the percept of single vision in young children
title_full_unstemmed	The relationship between reflex eye realignment and the percept of single vision in young children
title_sort	relationship between reflex eye realignment and the percept of single vision in young children
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9e081fbac50a46d2acb13d90674dd62a
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The relationship between reflex eye realignment and the percept of single vision in young children

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