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Elsevier, Neurobiology of Aging, 12(31), p. 2160-2168, 2010

DOI: 10.1016/j.neurobiolaging.2008.12.008

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Facilitating skilled right hand motor function in older subjects by anodal polarization over the left primary motor cortex

This paper is available in a repository.
This paper is available in a repository.

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Abstract

Healthy aging is accompanied by limitations in performance of activities of daily living and personal independence. Recent reports demonstrated improvements in motor function induced by non-invasive anodal direct current stimulation (tDCS) of the primary motor cortex (M1) in young healthy adults. Here we tested the hypothesis that a single session of anodal tDCS over left M1 could facilitate performance of right upper extremity tasks required for activities of daily living (Jebsen-Taylor Hand function Test, JTT) in older subjects relative to sham in a double-blind crossover study design. We found (a) significant improvement in JTT function with tDCS relative to sham that outlasted the stimulation period by at least 30 minutes, (b) that the older the subjects the more prominent this improvement appeared and (c) that consistent with previous results in younger subjects, these effects were not accompanied by any overt undesired side effect. We conclude that anodal tDCS applied over M1 can facilitate performance of skilled hand functions required for activities of daily living in older subjects.