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Reading from a Head-Fixed Display during Walking: Adverse Effects of Gaze Stabilization Mechanisms

Reading performance during standing and walking was assessed for information presented on earth-fixed and head-fixed displays by determining the minimal duration during which a numerical time stimulus needed to be presented for 50% correct naming answers. Reading from the earth-fixed display was com...

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Detalles Bibliográficos
Autores principales: Borg, Olivier, Casanova, Remy, Bootsma, Reinoud J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4460068/
https://www.ncbi.nlm.nih.gov/pubmed/26053622
http://dx.doi.org/10.1371/journal.pone.0129902
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author Borg, Olivier
Casanova, Remy
Bootsma, Reinoud J.
author_facet Borg, Olivier
Casanova, Remy
Bootsma, Reinoud J.
author_sort Borg, Olivier
collection PubMed
description Reading performance during standing and walking was assessed for information presented on earth-fixed and head-fixed displays by determining the minimal duration during which a numerical time stimulus needed to be presented for 50% correct naming answers. Reading from the earth-fixed display was comparable during standing and walking, with optimal performance being attained for visual character sizes in the range of 0.2° to 1°. Reading from the head-fixed display was impaired for small (0.2-0.3°) and large (5°) visual character sizes, especially during walking. Analysis of head and eye movements demonstrated that retinal slip was larger during walking than during standing, but remained within the functional acuity range when reading from the earth-fixed display. The detrimental effects on performance of reading from the head-fixed display during walking could be attributed to loss of acuity resulting from large retinal slip. Because walking activated the angular vestibulo-ocular reflex, the resulting compensatory eye movements acted to stabilize gaze on the information presented on the earth-fixed display but destabilized gaze from the information presented on the head-fixed display. We conclude that the gaze stabilization mechanisms that normally allow visual performance to be maintained during physical activity adversely affect reading performance when the information is presented on a display attached to the head.
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spelling pubmed-44600682015-06-16 Reading from a Head-Fixed Display during Walking: Adverse Effects of Gaze Stabilization Mechanisms Borg, Olivier Casanova, Remy Bootsma, Reinoud J. PLoS One Research Article Reading performance during standing and walking was assessed for information presented on earth-fixed and head-fixed displays by determining the minimal duration during which a numerical time stimulus needed to be presented for 50% correct naming answers. Reading from the earth-fixed display was comparable during standing and walking, with optimal performance being attained for visual character sizes in the range of 0.2° to 1°. Reading from the head-fixed display was impaired for small (0.2-0.3°) and large (5°) visual character sizes, especially during walking. Analysis of head and eye movements demonstrated that retinal slip was larger during walking than during standing, but remained within the functional acuity range when reading from the earth-fixed display. The detrimental effects on performance of reading from the head-fixed display during walking could be attributed to loss of acuity resulting from large retinal slip. Because walking activated the angular vestibulo-ocular reflex, the resulting compensatory eye movements acted to stabilize gaze on the information presented on the earth-fixed display but destabilized gaze from the information presented on the head-fixed display. We conclude that the gaze stabilization mechanisms that normally allow visual performance to be maintained during physical activity adversely affect reading performance when the information is presented on a display attached to the head. Public Library of Science 2015-06-08 /pmc/articles/PMC4460068/ /pubmed/26053622 http://dx.doi.org/10.1371/journal.pone.0129902 Text en © 2015 Borg et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Borg, Olivier
Casanova, Remy
Bootsma, Reinoud J.
Reading from a Head-Fixed Display during Walking: Adverse Effects of Gaze Stabilization Mechanisms
title Reading from a Head-Fixed Display during Walking: Adverse Effects of Gaze Stabilization Mechanisms
title_full Reading from a Head-Fixed Display during Walking: Adverse Effects of Gaze Stabilization Mechanisms
title_fullStr Reading from a Head-Fixed Display during Walking: Adverse Effects of Gaze Stabilization Mechanisms
title_full_unstemmed Reading from a Head-Fixed Display during Walking: Adverse Effects of Gaze Stabilization Mechanisms
title_short Reading from a Head-Fixed Display during Walking: Adverse Effects of Gaze Stabilization Mechanisms
title_sort reading from a head-fixed display during walking: adverse effects of gaze stabilization mechanisms
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4460068/
https://www.ncbi.nlm.nih.gov/pubmed/26053622
http://dx.doi.org/10.1371/journal.pone.0129902
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