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Aging and inhibition of a prepotent motor response during an ongoing action

Potter, Lauren M. and Grealy, Madeleine A. (2008) Aging and inhibition of a prepotent motor response during an ongoing action. Aging, Neuropsychology, and Cognition, 15 (2). pp. 232-255. ISSN 1382-5585

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Abstract

Inhibitory functions are key mechanisms underlying age related decline (Park & Gutchess, 2000, in: Cognitive aging: A primer. Hove: Psychology Press), yet few studies have investigated their impact on everyday tasks involving action as well as cognition. Using an everyday-based go/no-go task we devised a motor analogy of traditional neuropsychological tests to investigate in 134 older (aged 60-88) and 133 younger adults (aged 20-59) the ability to inhibit a prepotent motor response during an ongoing action. Older adults produced more inhibition failures as expected, but more strikingly inhibitory errors were not all or none; even when the inappropriate response was successfully inhibited, difficulties controlling ongoing movements emerged from as young as people in their 40s. The ability to inhibit therefore does not ensure control of ongoing tasks, and traditional cognitive tests may be unable to detect such difficulties. Furthermore, performance did not covary with education or action speed. Implications for neuropsychological theory and assessing/enhancing functional ability are discussed.

Item type: Article
ID code: 10194
Keywords: aging, prepotent motor response, Psychology
Subjects: Philosophy. Psychology. Religion > Psychology
Department: Faculty of Humanities and Social Sciences (HaSS) > School of Psychological Science and Health > Psychology
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 26 Mar 2010 12:32
    Last modified: 15 Oct 2012 16:59
    URI: http://strathprints.strath.ac.uk/id/eprint/10194

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