TY - JOUR
T1 - Learning to Combine High Variability With High Precision
T2 - Lack of Transfer to a Different Task
AU - Wu, Yen Hsun
AU - Truglio, Thomas S.
AU - Zatsiorsky, Vladimir M.
AU - Latash, Mark L.
N1 - Publisher Copyright:
Copyright © Taylor & Francis Group, LLC 2015.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2015/3/4
Y1 - 2015/3/4
N2 - The authors studied effects of practicing a 4-finger accurate force production task on multifinger coordination quantified within the uncontrolled manifold hypothesis. During practice, task instability was modified by changing visual feedback gain based on accuracy of performance. The authors also explored the retention of these effects, and their transfer to a prehensile task. Subjects practiced the force production task for 2 days. After the practice, total force variability decreased and performance became more accurate. In contrast, variance of finger forces showed a tendency to increase during the first practice session while in the space of finger modes (hypothetical commands to fingers) the increase was under the significance level. These effects were retained for 2 weeks. No transfer of these effects to the prehensile task was seen, suggesting high specificity of coordination changes. The retention of practice effects without transfer to a different task suggests that further studies on a more practical method of improving coordination are needed.
AB - The authors studied effects of practicing a 4-finger accurate force production task on multifinger coordination quantified within the uncontrolled manifold hypothesis. During practice, task instability was modified by changing visual feedback gain based on accuracy of performance. The authors also explored the retention of these effects, and their transfer to a prehensile task. Subjects practiced the force production task for 2 days. After the practice, total force variability decreased and performance became more accurate. In contrast, variance of finger forces showed a tendency to increase during the first practice session while in the space of finger modes (hypothetical commands to fingers) the increase was under the significance level. These effects were retained for 2 weeks. No transfer of these effects to the prehensile task was seen, suggesting high specificity of coordination changes. The retention of practice effects without transfer to a different task suggests that further studies on a more practical method of improving coordination are needed.
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U2 - 10.1080/00222895.2014.961892
DO - 10.1080/00222895.2014.961892
M3 - Article
C2 - 25365477
AN - SCOPUS:84937642957
VL - 47
SP - 153
EP - 165
JO - Journal of Motor Behavior
JF - Journal of Motor Behavior
SN - 0022-2895
IS - 2
ER -