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Journal Article

Citation

Hinder MR, Tresilian JR, Riek S, Carson RG. Brain Res. 2008; 1197: 123-134.

Affiliation

Perception and Motor Systems Laboratory, School of Human Movement Studies, University of Queensland, 4072, Australia. mhinder@hms.uq.edu.au

Copyright

(Copyright © 2008, International Brain Research Organization, Publisher Elsevier Publishing)

DOI

10.1016/j.brainres.2007.12.067

PMID

18241844

Abstract

We investigated the role of visual feedback in adapting to novel visuomotor environments. Participants produced isometric elbow torques to move a cursor towards visual targets. Following trials with no rotation, participants adapted to a 60 degrees rotation of the visual feedback before returning to the non-rotated condition. Participants received continuous visual feedback (CF) of cursor position during task execution or post-trial visual feedback (PF). With training, reductions of the angular deviations of the cursor path occurred to a similar extent and at a similar rate for CF and PF groups. However, upon re-exposure to the non-rotated environment only CF participants exhibited post-training aftereffects, manifested as increased angular deviation of the cursor path, with respect to the pre-rotation trials. These aftereffects occurred despite colour cues permitting identification of the change in environment. The results show that concurrent feedback permits automatic recalibration of the visuomotor mapping while post-trial feedback permits performance improvement via a cognitive strategy.


Language: en

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