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A developmental study of the influence of task characteristics on motor overflow

Addamo, Patricia K, Farrow, Maree, Hoy, K, Bradshaw, J and Georgiou-Karistianis, N (2009) A developmental study of the influence of task characteristics on motor overflow. Brain and Cognition, 69 (2). pp. 413-419. ISSN 0278-2626 (print) 1090-2147 (online)

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Motor overflow refers to involuntary movement or muscle activity that may coincide with voluntary movement. This study examined factors influencing motor overflow in 17 children (8–11 years), and 17 adults (18–35 years). Participants performed a finger pressing task by exerting either 33% or 66% of their maximal force output using their dominant or non-dominant hand. Attention was manipulated by tactile stimulation to one or both hands. Overflow relative to the target force was greater in children compared to adults, and at the lower target force for both groups, but was not influenced by attentional stimulation. Childhood overflow was greater when the left-hand performed the task. Although an immature motor system may underlie an inability to suppress involuntary movement, childhood overflow may provide motor stabilization.

Item Type: Article
Uncontrolled Keywords: ResPubID22002. corpus callosum, motor cortex, motor development, motor learning, motor skills, corticospinal tract
Subjects: Current > FOR Classification > 1106 Human Movement and Sports Science
Current > FOR Classification > 1701 Psychology
Historical > Faculty/School/Research Centre/Department > Institute of Sport, Exercise and Active Living (ISEAL)
Depositing User: VUIR
Date Deposited: 25 May 2012 03:49
Last Modified: 24 Aug 2012 06:16
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Citations in Scopus: 9 - View on Scopus

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