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The interference effects of non-rotated versus counter-rotated trials in visuomotor adaptation
Citation
Hinder, MR and Walk, L and Woolley, DG and Riek, S and Carson, RG, The interference effects of non-rotated versus counter-rotated trials in visuomotor adaptation, Experimental Brain Research, 180, (4) pp. 629-640. ISSN 0014-4819 (2007) [Refereed Article]
Copyright Statement
Copyright 2007 Springer-Verlag
DOI: doi:10.1007/s00221-007-0888-1
Abstract
An isometric torque-production task was
used to investigate interference and retention in
adaptation to multiple visuomotor environments.
Subjects produced isometric flexion–extension and
pronation–supination elbow torques to move a cursor
to acquire targets as quickly as possible. Adaptation to
a 30 counter-clockwise (CCW) rotation (task A), was
followed by a period of rest (control), trials with no
rotation (task B0), or trials with a 60 clockwise (CW)
rotation (task B60). For all groups, retention of task A
was assessed 5 h later. With initial training, all groups
reduced the angular deviation of cursor paths early in
the movements, indicating feedforward adaptation. For
the control group, performance at commencement of
the retest was significantly better than that at the
beginning of the initial learning. For the B0 group,
performance in the retest of task A was not dissimilar
to that at the start of the initial learning, while for the
B60 group retest performance in task A was markedly
worse than initially observed. Our results indicate that
close juxtaposition of two visuomotor environments
precludes improved retest performance in the initial
environment. Data for the B60 group, specifically larger angular errors upon retest compared with initial
exposures, are consistent with the presence of anterograde interference. Furthermore, full interference occurred even when the visuomotor environment
encountered in the second task was not rotated (B0).
This latter novel result differs from those obtained for
force field learning, where interference does not occur
when task B does not impose perturbing forces, i.e.,
when B consists of a null field (Brashers-Krug et al.,
Nature 382:252–255, 1996). The results are consistent
with recent proposals suggesting different interference
mechanisms for visuomotor (kinematic) compared to
force field (dynamic) adaptations, and have implications for the use of washout trials when studying
interference between multiple visuomotor environments.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | movement adaptation, motor learning |
Research Division: | Health Sciences |
Research Group: | Sports science and exercise |
Research Field: | Motor control |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the health sciences |
UTAS Author: | Hinder, MR (Associate Professor Mark Hinder) |
ID Code: | 130075 |
Year Published: | 2007 |
Web of Science® Times Cited: | 27 |
Deposited By: | Psychology |
Deposited On: | 2019-01-09 |
Last Modified: | 2019-04-26 |
Downloads: | 0 |
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