Full gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision

Abstract The visual pathway is retinotopically organized and sensitive to gaze position, leading us to hypothesize that subjects using visual prostheses incorporating eye position would perform better on perceptual tasks than with devices that are merely head-steered. We had sighted subjects read se...

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Autores principales:	Nadia Paraskevoudi, John S. Pezaris
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3f88d99820dc4587b86ab0fba683f4bb
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id	oai:doaj.org-article:3f88d99820dc4587b86ab0fba683f4bb
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spelling	oai:doaj.org-article:3f88d99820dc4587b86ab0fba683f4bb2021-12-02T14:49:24ZFull gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision10.1038/s41598-021-86996-42045-2322https://doaj.org/article/3f88d99820dc4587b86ab0fba683f4bb2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86996-4https://doaj.org/toc/2045-2322Abstract The visual pathway is retinotopically organized and sensitive to gaze position, leading us to hypothesize that subjects using visual prostheses incorporating eye position would perform better on perceptual tasks than with devices that are merely head-steered. We had sighted subjects read sentences from the MNREAD corpus through a simulation of artificial vision under conditions of full gaze compensation, and head-steered viewing. With 2000 simulated phosphenes, subjects (n = 23) were immediately able to read under full gaze compensation and were assessed at an equivalent visual acuity of 1.0 logMAR, but were nearly unable to perform the task under head-steered viewing. At the largest font size tested, 1.4 logMAR, subjects read at 59 WPM (50% of normal speed) with 100% accuracy under the full-gaze condition, but at 0.7 WPM (under 1% of normal) with below 15% accuracy under head-steering. We conclude that gaze-compensated prostheses are likely to produce considerably better patient outcomes than those not incorporating eye movements.Nadia ParaskevoudiJohn S. PezarisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-17 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nadia Paraskevoudi John S. Pezaris Full gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision
description	Abstract The visual pathway is retinotopically organized and sensitive to gaze position, leading us to hypothesize that subjects using visual prostheses incorporating eye position would perform better on perceptual tasks than with devices that are merely head-steered. We had sighted subjects read sentences from the MNREAD corpus through a simulation of artificial vision under conditions of full gaze compensation, and head-steered viewing. With 2000 simulated phosphenes, subjects (n = 23) were immediately able to read under full gaze compensation and were assessed at an equivalent visual acuity of 1.0 logMAR, but were nearly unable to perform the task under head-steered viewing. At the largest font size tested, 1.4 logMAR, subjects read at 59 WPM (50% of normal speed) with 100% accuracy under the full-gaze condition, but at 0.7 WPM (under 1% of normal) with below 15% accuracy under head-steering. We conclude that gaze-compensated prostheses are likely to produce considerably better patient outcomes than those not incorporating eye movements.
format	article
author	Nadia Paraskevoudi John S. Pezaris
author_facet	Nadia Paraskevoudi John S. Pezaris
author_sort	Nadia Paraskevoudi
title	Full gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision
title_short	Full gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision
title_full	Full gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision
title_fullStr	Full gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision
title_full_unstemmed	Full gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision
title_sort	full gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3f88d99820dc4587b86ab0fba683f4bb
work_keys_str_mv	AT nadiaparaskevoudi fullgazecontingencyprovidesbetterreadingperformancethanheadsteeringaloneinasimulationofprostheticvision AT johnspezaris fullgazecontingencyprovidesbetterreadingperformancethanheadsteeringaloneinasimulationofprostheticvision
_version_	1718389505084358656

Full gaze contingency provides better reading performance than head steering alone in a simulation of prosthetic vision

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