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The effect of attending to motor overflow on its voluntary inhibition in young and older adults

Citation

Addamo, PK and Farrow, M and Bradshaw, JL and Moss, S and Georgiou-Karistianis, N and Moss, S, The effect of attending to motor overflow on its voluntary inhibition in young and older adults, Brain and Cognition: Journal of Clinical, Experimental, and Theoretical Research, 74, (3) pp. 358-64. ISSN 0278-2626 (2010) [Refereed Article]

DOI: doi:10.1016/j.bandc.2010.10.001

Abstract

Motor overflow refers to involuntary movement or muscle activity coinciding with voluntary movement. We examined whether 16 young adults (18-30 years) and 16 older adults (50-80 years) could voluntarily inhibit overflow. Participants performed a finger pressing task, exerting 50% of their maximal force. Overflow was concurrently recorded in the non-task hand. In the first condition, participants were not made aware of their motor overflow. Then participants, though informed of it, were asked to ignore their overflow. Finally, participants were requested to inhibit overflow with, and then without visual feedback, or vice versa. Overflow was exacerbated when older adults were unaware of it, and was reduced once they were informed. For young adults there was no significant difference between these conditions. Both Age Groups could significantly reduce overflow when so requested, independent of visual feedback. Thus motor overflow can be modulated by higher order cognitive control with directed attention.

Item Details

Item Type:Refereed Article
Research Division:Medical and Health Sciences
Research Group:Neurosciences
Research Field:Neurosciences not elsewhere classified
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Nervous System and Disorders
Author:Farrow, M (Dr Maree Farrow)
ID Code:102877
Year Published:2010
Web of Science® Times Cited:9
Deposited By:Wicking Dementia Research and Education Centre
Deposited On:2015-09-09
Last Modified:2015-09-09
Downloads:0

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