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Visuomotor Learning Enhanced by Augmenting Instantaneous Trajectory Error Feedback during Reaching

Identifieur interne : 001701 ( Main/Merge ); précédent : 001700; suivant : 001702

Visuomotor Learning Enhanced by Augmenting Instantaneous Trajectory Error Feedback during Reaching

Auteurs : James L. Patton [États-Unis] ; Yejun John Wei [États-Unis] ; Preeti Bajaj [États-Unis] ; Robert A. Scheidt [États-Unis]

Source :

RBID : PMC:3559751

Abstract

We studied reach adaptation to a 30° visuomotor rotation to determine whether augmented error feedback can promote faster and more complete motor learning. Four groups of healthy adults reached with their unseen arm to visual targets surrounding a central starting point. A manipulandum tracked hand motion and projected a cursor onto a display immediately above the horizontal plane of movement. For one group, deviations from the ideal movement were amplified with a gain of 2 whereas another group experienced a gain of 3.1. The third group experienced an offset equal to the average error seen in the initial perturbations, while a fourth group served as controls. Learning in the gain 2 and offset groups was nearly twice as fast as controls. Moreover, the offset group averaged more reduction in error. Such error augmentation techniques may be useful for training novel visuomotor transformations as required of robotic teleoperators or in movement rehabilitation of the neurologically impaired.


Url:
DOI: 10.1371/journal.pone.0046466
PubMed: 23382796
PubMed Central: 3559751

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PMC:3559751

Le document en format XML

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