Lookup NU author(s): Dr Sara Graziadio,
Professor Kianoush Nazarpour,
Professor Andrew Jackson,
Professor Janet Eyre
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Hemispheric lateralization of movement control diminishes with age; whether this is compensatory or maladaptive is debated. The authors hypothesized that if compensatory, bilateral activation would lead to greater intermanual transfer in older subjects learning tasks that activate the cortex unilaterally in young adults. They studied 10 young and 14 older subjects, learning a unimanual visuomotor task comprising a feedforward phase, where there is unilateral cortical activation in young adults, and a feedback phase, which activates the cortex bilaterally in both age groups. Increased intermanual transfer was demonstrated in older subjects during feedforward learning, with no difference between groups during feedback learning. This finding is consistent with bilateral cortical activation being compensatory to maintain performance despite declining computational efficiency in neural networks.
Author(s): Graziadio S, Nazarpour K, Gretenkord S, Jackson A, Eyre J
Publication type: Article
Publication status: Published
Journal: Journal of Motor Behavior
Online publication date: 09/01/2015
Acceptance date: 23/10/2014
Date deposited: 12/01/2015
ISSN (print): 0022-2895
ISSN (electronic): 1940-1027
Altmetrics provided by Altmetric