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

journal contribution
posted on 2023-05-18, 13:23 authored by Addamo, PK, Maree Farrow, Hoy, KE, Bradshaw, JL, Georgiou-Karistianis, N
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.

History

Publication title

Brain and Cognition: Journal of Clinical, Experimental, and Theoretical Research

Volume

69

Article number

413-9

Number

413-9

ISSN

0278-2626

Department/School

Wicking Dementia Research Education Centre

Publisher

Academic Press Inc Elsevier Science

Place of publication

United States

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the health sciences

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