Impact of Wet Macular Degeneration on the Execution of Natural Actions

Boucart, Muriel; Delerue, Céline; Thibaut, Miguel; Szaffarczyk, Sébastien; Hayhoe, Mary; Tran, Thi-Ha-Chau

Type de document :

Article dans une revue scientifique

URL permanente :

http://hdl.handle.net/20.500.12210/4170

Titre :

Impact of Wet Macular Degeneration on the Execution of Natural Actions

Auteur(s) :

Boucart, Muriel [Auteur]

Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 [SCALab]
Delerue, Céline [Auteur]
Thibaut, Miguel [Auteur]
Szaffarczyk, Sébastien [Auteur]
Hayhoe, Mary [Auteur]
Tran, Thi-Ha-Chau [Auteur]

Titre de la revue :

Investigative Ophthalmology & Visual Science

Nom court de la revue :

Invest. Ophthalmol. Vis. Sci.

Numéro :

Pagination :

6832-6838

Date de publication :

2015-10

ISSN :

1552-5783

Discipline(s) HAL :

Sciences cognitives

Résumé en anglais : [en]

PURPOSE: To use eye movements to investigate how people with a central scotoma might be impaired in the execution of natural actions and whether task familiarity affects performance. METHODS: Sixteen participants with AMD ...
Lire la suite >PURPOSE: To use eye movements to investigate how people with a central scotoma might be impaired in the execution of natural actions and whether task familiarity affects performance. METHODS: Sixteen participants with AMD and 16 age-matched controls performed two natural actions: (1) a familiar sandwich-making task and (2) a less familiar model-building task. In each action, task-relevant and task-irrelevant objects were placed on a table, covering 90°. The participants were asked to execute the actions without a time constraint. Eye movements were recorded. RESULTS: The people with AMD were significantly slower than the controls, both in the exploration phase (before the first reaching movement) and in the working phase (execution of action), especially in the unfamiliar task. Gaze duration was longer on relevant than irrelevant objects in both groups and tasks, as might be expected. However, for the participants with AMD, gaze durations were longer on all of the objects, whether relevant or irrelevant, except in the more familiar task. This suggests that participants with AMD take longer to extract the information they need but that this can be counteracted when the task items are familiar. The number of saccades/min of the task was significantly greater for the people with AMD than for the controls. CONCLUSIONS: The present results show that people with AMD can accomplish natural actions efficiently, but need longer gaze durations and more eye movements than normally sighted people. This effect can be reduced when executing a familiar task.Lire moins >

Langue :

Anglais

Audience :

Non spécifiée

Établissement(s) :

Université de Lille
CNRS
CHU Lille

Collections :

Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193

Équipe(s) de recherche :

Équipe Action, Vision et Apprentissage (AVA)

Date de dépôt :

2019-02-13T14:48:29Z
2019-11-12T15:49:31Z

Numéro de version	Lien	Date de modification
2	20.500.12210/4170*	2019-11-12T15:45:54Z
1	20.500.12210/4170.1	2019-02-13T14:48:29Z

Impact of Wet Macular Degeneration on the ...

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Impact of Wet Macular Degeneration on the ...

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