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The Influence of Reduced Visual Acuity on Age-Related Decline in Spatial Working Memory : An Investigation

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The Influence of Reduced Visual Acuity on Age-Related Decline in Spatial Working Memory : An Investigation

Auteurs : Zaira Cattaneo [Italie] ; Ela Bhatt [États-Unis] ; Lotfi B. Merabet [États-Unis] ; Alfredo Pece [Italie] ; Tomaso Vecchi [Italie]

Source :

Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition [ 1382-5585 ] ; 2008.

RBID : Pascal:09-0059354

Descripteurs français

Pascal (Inist)
- Acuité visuelle, Age, Mémoire spatiale, Mémoire de travail, Malvoyance, Sénescence, Sensibilité tactile, Perception, Représentation, Vision, Homme, Adulte jeune, Personne âgée.
Wicri :
- topic : Homme, Personne âgée.

English descriptors

KwdEn :
- Age, Elderly, Human, Low vision, Perception, Representation, Senescence, Spatial memory, Tactile sensitivity, Vision, Visual acuity, Working memory, Young adult.

Abstract

To investigate the relationship between visual acuity and cognitive function with aging, we compared low-vision and normally-sighted young and elderly individuals on a spatial working memory (WM) task. The task required subjects to memorise target locations on different matrices after perceiving them visually or haptically. The haptic modality was included as a control to look at the effect of aging on memory without the confounding effect of visual deficit. Overall, age and visual status did not interact to affect WM accuracy, suggesting that age does not exaggerate the effects of visual deprivation. Young participants performed better than the elderly only when the task required more operational processes (i.e., integration of information). Sighted participants outperformed the visually impaired regardless of testing modality suggesting that the effect of the visual deficit is not confined to only the most peripheral levels of information processing. These findings suggest that vision, being the primary sensory modality, tends to shape the general supramodal mechanisms of memory.

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">To investigate the relationship between visual acuity and cognitive function with aging, we compared low-vision and normally-sighted young and elderly individuals on a spatial working memory (WM) task. The task required subjects to memorise target locations on different matrices after perceiving them visually or haptically. The haptic modality was included as a control to look at the effect of aging on memory without the confounding effect of visual deficit. Overall, age and visual status did not interact to affect WM accuracy, suggesting that age does not exaggerate the effects of visual deprivation. Young participants performed better than the elderly only when the task required more operational processes (i.e., integration of information). Sighted participants outperformed the visually impaired regardless of testing modality suggesting that the effect of the visual deficit is not confined to only the most peripheral levels of information processing. These findings suggest that vision, being the primary sensory modality, tends to shape the general supramodal mechanisms of memory.</div>
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The Influence of Reduced Visual Acuity on Age-Related Decline in Spatial Working Memory : An Investigation

The Influence of Reduced Visual Acuity on Age-Related Decline in Spatial Working Memory : An Investigation

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri