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Can ongoing movements be guided by allocentric visual information when the target is visible?

People use both egocentric (object-to-self) and allocentric (object-to-object) spatial information to interact with the world. Evidence for allocentric information guiding ongoing actions stems from studies in which people reached to where targets had previously been seen while other objects were mo...

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Detalles Bibliográficos
Autores principales: Crowe, Emily M., Bossard, Martin, Brenner, Eli
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Association for Research in Vision and Ophthalmology 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7804519/
https://www.ncbi.nlm.nih.gov/pubmed/33427872
http://dx.doi.org/10.1167/jov.21.1.6
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author Crowe, Emily M.
Bossard, Martin
Brenner, Eli
author_facet Crowe, Emily M.
Bossard, Martin
Brenner, Eli
author_sort Crowe, Emily M.
collection PubMed
description People use both egocentric (object-to-self) and allocentric (object-to-object) spatial information to interact with the world. Evidence for allocentric information guiding ongoing actions stems from studies in which people reached to where targets had previously been seen while other objects were moved. Since egocentric position judgments might fade or change when the target is removed, we sought for conditions in which people might benefit from relying on allocentric information when the target remains visible. We used a task that required participants to intercept targets that moved across a screen using a cursor that represented their finger but that moved by a different amount in a different plane. During each attempt, we perturbed the target, cursor, or background individually or all three simultaneously such that their relative positions did not change and there was no need to adjust the ongoing movement. An obvious way to avoid responding to such simultaneous perturbations is by relying on allocentric information. Relying on egocentric information would give a response that resembles the combined responses to the three isolated perturbations. The hand responded in accordance with the responses to the isolated perturbations despite the differences between how the finger and cursor moved. This response remained when the simultaneous perturbation was repeated many times, suggesting that participants hardly relied upon allocentric spatial information to control their ongoing visually guided actions.
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spelling pubmed-78045192021-01-27 Can ongoing movements be guided by allocentric visual information when the target is visible? Crowe, Emily M. Bossard, Martin Brenner, Eli J Vis Article People use both egocentric (object-to-self) and allocentric (object-to-object) spatial information to interact with the world. Evidence for allocentric information guiding ongoing actions stems from studies in which people reached to where targets had previously been seen while other objects were moved. Since egocentric position judgments might fade or change when the target is removed, we sought for conditions in which people might benefit from relying on allocentric information when the target remains visible. We used a task that required participants to intercept targets that moved across a screen using a cursor that represented their finger but that moved by a different amount in a different plane. During each attempt, we perturbed the target, cursor, or background individually or all three simultaneously such that their relative positions did not change and there was no need to adjust the ongoing movement. An obvious way to avoid responding to such simultaneous perturbations is by relying on allocentric information. Relying on egocentric information would give a response that resembles the combined responses to the three isolated perturbations. The hand responded in accordance with the responses to the isolated perturbations despite the differences between how the finger and cursor moved. This response remained when the simultaneous perturbation was repeated many times, suggesting that participants hardly relied upon allocentric spatial information to control their ongoing visually guided actions. The Association for Research in Vision and Ophthalmology 2021-01-11 /pmc/articles/PMC7804519/ /pubmed/33427872 http://dx.doi.org/10.1167/jov.21.1.6 Text en Copyright 2021 The Authors http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License.
spellingShingle Article
Crowe, Emily M.
Bossard, Martin
Brenner, Eli
Can ongoing movements be guided by allocentric visual information when the target is visible?
title Can ongoing movements be guided by allocentric visual information when the target is visible?
title_full Can ongoing movements be guided by allocentric visual information when the target is visible?
title_fullStr Can ongoing movements be guided by allocentric visual information when the target is visible?
title_full_unstemmed Can ongoing movements be guided by allocentric visual information when the target is visible?
title_short Can ongoing movements be guided by allocentric visual information when the target is visible?
title_sort can ongoing movements be guided by allocentric visual information when the target is visible?
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7804519/
https://www.ncbi.nlm.nih.gov/pubmed/33427872
http://dx.doi.org/10.1167/jov.21.1.6
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