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Eye Behavior During Multiple Object Tracking and Multiple Identity Tracking

We review all published eye-tracking studies to date that have used eye movements to examine multiple object (MOT) or multiple identity tracking (MIT). In both tasks, observers dynamically track multiple moving objects. In MOT the objects are identical, whereas in MIT they have distinct identities....

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Detalles Bibliográficos
Autores principales: Hyönä, Jukka, Li, Jie, Oksama, Lauri
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6802796/
https://www.ncbi.nlm.nih.gov/pubmed/31735838
http://dx.doi.org/10.3390/vision3030037
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author Hyönä, Jukka
Li, Jie
Oksama, Lauri
author_facet Hyönä, Jukka
Li, Jie
Oksama, Lauri
author_sort Hyönä, Jukka
collection PubMed
description We review all published eye-tracking studies to date that have used eye movements to examine multiple object (MOT) or multiple identity tracking (MIT). In both tasks, observers dynamically track multiple moving objects. In MOT the objects are identical, whereas in MIT they have distinct identities. In MOT, observers prefer to fixate on blank space, which is often the center of gravity formed by the moving targets (centroid). In contrast, in MIT observers have a strong preference for the target-switching strategy, presumably to refresh and maintain identity-location bindings for the targets. To account for the qualitative differences between MOT and MIT, two mechanisms have been posited, a position tracking (MOT) and an identity tracking (MOT & MIT) mechanism. Eye-tracking studies of MOT have also demonstrated that observers execute rescue saccades toward targets in danger of becoming occluded or are about to change direction after a collision. Crowding attracts the eyes close to it in order to increase visual acuity for the crowded objects to prevent target loss. It is suggested that future studies should concentrate more on MIT, as MIT more closely resembles tracking in the real world.
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spelling pubmed-68027962019-11-14 Eye Behavior During Multiple Object Tracking and Multiple Identity Tracking Hyönä, Jukka Li, Jie Oksama, Lauri Vision (Basel) Review We review all published eye-tracking studies to date that have used eye movements to examine multiple object (MOT) or multiple identity tracking (MIT). In both tasks, observers dynamically track multiple moving objects. In MOT the objects are identical, whereas in MIT they have distinct identities. In MOT, observers prefer to fixate on blank space, which is often the center of gravity formed by the moving targets (centroid). In contrast, in MIT observers have a strong preference for the target-switching strategy, presumably to refresh and maintain identity-location bindings for the targets. To account for the qualitative differences between MOT and MIT, two mechanisms have been posited, a position tracking (MOT) and an identity tracking (MOT & MIT) mechanism. Eye-tracking studies of MOT have also demonstrated that observers execute rescue saccades toward targets in danger of becoming occluded or are about to change direction after a collision. Crowding attracts the eyes close to it in order to increase visual acuity for the crowded objects to prevent target loss. It is suggested that future studies should concentrate more on MIT, as MIT more closely resembles tracking in the real world. MDPI 2019-07-31 /pmc/articles/PMC6802796/ /pubmed/31735838 http://dx.doi.org/10.3390/vision3030037 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Hyönä, Jukka
Li, Jie
Oksama, Lauri
Eye Behavior During Multiple Object Tracking and Multiple Identity Tracking
title Eye Behavior During Multiple Object Tracking and Multiple Identity Tracking
title_full Eye Behavior During Multiple Object Tracking and Multiple Identity Tracking
title_fullStr Eye Behavior During Multiple Object Tracking and Multiple Identity Tracking
title_full_unstemmed Eye Behavior During Multiple Object Tracking and Multiple Identity Tracking
title_short Eye Behavior During Multiple Object Tracking and Multiple Identity Tracking
title_sort eye behavior during multiple object tracking and multiple identity tracking
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6802796/
https://www.ncbi.nlm.nih.gov/pubmed/31735838
http://dx.doi.org/10.3390/vision3030037
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