You just might want your doctor to get the full research and use it to apply recovery protocols to your situation.
Patricia K. Addamo a,⁎,
Maree Farrow b,
Kate E. Hoy a,c,
John L. Bradshaw a,
Nellie Georgiou-Karistianis a
a Experimental Neuropsychology Research Unit, School of Psychology, Psychiatry and Psychological Medicine, Monash University,Clayton, 3800, Victoria, Australia
b Howard Florey Institute, The University of Melbourne, Parkville, 3010, Victoria, Australia
c Alfred Hospital Psychiatry Research Centre, The Alfred Hospital, Melbourne, 3004, Victoria, Australia
Article history:
Accepted 15 January 2007Available online 20 January 2007
ABSTRACT
Motor overflow refers to overt involuntary movement, or covert muscle activity, that sometimes co-occurs with voluntary movement. Various clinical populations exhibit overflow. Motor overflow is also present in healthy children and the elderly, although in young adults, overt overflow is considered abnormal unless elicited under conditions of extreme force or muscle fatigue. Current theories of overflow imply that the corpus callosum may mediate production of this phenomenon. However, given that the corpus callosum is a conduit enabling the transfer of cortical information, surprisingly few studies have considered the cortical or subcortical structures underlying overflow. This review considers the developmental trend of motor overflow production, specifically in the upper-limbs, and the mechanisms thought to underlie this age-related phenomenon. Potential neurological correlates of motor overflow will be discussed in conjunction with higher order attentional processes which also regulate motor overflow production. Future research investigating the impact of attentional processes on overflow production may be particularly valuable for designing rehabilitation strategies for patients experiencing induced pathological overflow or conversely, to develop techniques to encourage the recovery of movement function in individuals with paretic limbs.Crown Copyright © 2007 Published by Elsevier B.V. All rights reserved.
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