The contribution of impaired working memory monitoring to performance of the self-ordered pointing task in normal aging and Parkinson's disease.
Identifieur interne : 001677 ( PubMed/Checkpoint ); précédent : 001676; suivant : 001678The contribution of impaired working memory monitoring to performance of the self-ordered pointing task in normal aging and Parkinson's disease.
Auteurs : R. West [Canada] ; A M Ergis ; G. Winocur ; J. Saint-CyrSource :
- Neuropsychology [ 0894-4105 ] ; 1998.
English descriptors
- KwdEn :
- MESH :
- physiology : Aging, Memory, Short-Term, Nerve Net, Psychomotor Performance.
- physiopathology : Frontal Lobe, Parkinson Disease.
- Adolescent, Adult, Aged, Analysis of Variance, Female, Humans, Male, Middle Aged.
Abstract
The factors contributing to the working memory deficit observed in older adults and individuals with Parkinson's disease on the Self-Ordered Pointing Task were examined in 2 experiments. A detailed analysis of the error data revealed that errors tended to be clustered toward the end of a trial and that this effect was somewhat independent of set size. This pattern was proposed to result from a monitoring deficit where individuals failed to maintain an integrated representation of how far they had proceeded in the trial, an interpretation consistent with animal work by M. Petrides (1995).
PubMed: 9805324
Affiliations:
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pubmed:9805324Le document en format XML
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<front><div type="abstract" xml:lang="en">The factors contributing to the working memory deficit observed in older adults and individuals with Parkinson's disease on the Self-Ordered Pointing Task were examined in 2 experiments. A detailed analysis of the error data revealed that errors tended to be clustered toward the end of a trial and that this effect was somewhat independent of set size. This pattern was proposed to result from a monitoring deficit where individuals failed to maintain an integrated representation of how far they had proceeded in the trial, an interpretation consistent with animal work by M. Petrides (1995).</div>
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<Abstract><AbstractText>The factors contributing to the working memory deficit observed in older adults and individuals with Parkinson's disease on the Self-Ordered Pointing Task were examined in 2 experiments. A detailed analysis of the error data revealed that errors tended to be clustered toward the end of a trial and that this effect was somewhat independent of set size. This pattern was proposed to result from a monitoring deficit where individuals failed to maintain an integrated representation of how far they had proceeded in the trial, an interpretation consistent with animal work by M. Petrides (1995).</AbstractText>
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