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Published in: Experimental Brain Research 4/2008

01-08-2008 | Research Article

Selective attention modulates visual and haptic repetition priming: effects in aging and Alzheimer's disease

Authors: Soledad Ballesteros, José M. Reales, Julia Mayas, Morton A. Heller

Published in: Experimental Brain Research | Issue 4/2008

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Abstract

In two experiments, we examined the effect of selective attention at encoding on repetition priming in normal aging and Alzheimer's disease (AD) patients for objects presented visually (experiment 1) or haptically (experiment 2). We used a repetition priming paradigm combined with a selective attention procedure at encoding. Reliable priming was found for both young adults and healthy older participants for visually presented pictures (experiment 1) as well as for haptically presented objects (experiment 2). However, this was only found for attended and not for unattended stimuli. The results suggest that independently of the perceptual modality, repetition priming requires attention at encoding and that perceptual facilitation is maintained in normal aging. However, AD patients did not show priming for attended stimuli, or for unattended visual or haptic objects. These findings suggest an early deficit of selective attention in AD. Results are discussed from a cognitive neuroscience approach.
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Metadata
Title
Selective attention modulates visual and haptic repetition priming: effects in aging and Alzheimer's disease
Authors
Soledad Ballesteros
José M. Reales
Julia Mayas
Morton A. Heller
Publication date
01-08-2008
Publisher
Springer-Verlag
Published in
Experimental Brain Research / Issue 4/2008
Print ISSN: 0014-4819
Electronic ISSN: 1432-1106
DOI
https://doi.org/10.1007/s00221-008-1441-6

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