Fast and specific: insights into the acquisition and generalization of motor acuity.

08:00 EDT 16th October 2019 | BioPortfolio

Summary of "Fast and specific: insights into the acquisition and generalization of motor acuity."

Motor acuity is considered to be the outcome of prolonged practice and to involve morphological changes in the motor cortex. We have previously designed a curved pointing task, the arc pointing task (APT), to study motor acuity acquisition, defined as a change in the speed-accuracy tradeoff function (SAF) of the task. Here we study the generalization of motor acuity between hands and between tasks (drawing the arc in the opposite direction and with the untrained hand) and the effect of training duration on motor acuity. We report that training-induced motor acuity improvement did not generalize across hands and across tasks performed with the same hand, suggesting a task specific representation of motor acuity. To our surprise, the largest gains in motor acuity, measured both by changes in SAF and by improvement in multiple kinematic variables, were seen following a short exposure to the task. Our results suggest that motor acuity training-induced-improvement is task specific and that motor acuity starts to improve following a very short practice.


Journal Details

This article was published in the following journal.

Name: Journal of neurophysiology
ISSN: 1522-1598


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