Article (Scientific journals)
Dissociation of perceptual and motor inhibitory processes in young and elderly participants using the Simon task.
Germain, Sophie; Collette, Fabienne
2008In Journal of the International Neuropsychological Society, 14 (6), p. 1014-21
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Keywords :
Aging; Inhibibitory control
Abstract :
[en] Deficits in inhibitory abilities are frequently observed in normal aging. However, few studies have explored the generality of these deficits in a single group of participants. Here, we used an adaptation of the Simon task to differentially assess perceptual and motor inhibition using the same stimuli and task design and to determine whether these processes use separate or shared cognitive resources. We were interested in determining whether (1) normal aging is associated with the use of separate (as previously evidenced in young participants) or similar cognitive resources to perform perceptual and motor inhibition tasks; (2) older participants present a specific impairment in one of these two processes. Analyses of reaction times indicated that motor and perceptual inhibitory processes share some cognitive resources and both are impaired in normal aging. These results can be interpreted by considering that a dedifferentiation process is responsible for the inhibitory deficits presented by older participants.
Research center :
Centre de Neurosciences Cognitives et Comportementales - ULiège
GIGA CRC (Cyclotron Research Center) In vivo Imaging-Aging & Memory - ULiège
Disciplines :
Neurosciences & behavior
Author, co-author :
Germain, Sophie ;  Université de Liège - ULiège > Département des sciences cognitives > Neuropsychologie
Collette, Fabienne  ;  Université de Liège - ULiège > Département des sciences cognitives > Neuropsychologie - Département des sciences cognitives
Language :
English
Title :
Dissociation of perceptual and motor inhibitory processes in young and elderly participants using the Simon task.
Publication date :
2008
Journal title :
Journal of the International Neuropsychological Society
ISSN :
1355-6177
eISSN :
1469-7661
Publisher :
Cambridge University Press, Cambridge, United Kingdom
Volume :
14
Issue :
6
Pages :
1014-21
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 31 December 2008

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