Adaptation to visuomotor rotation through interaction between posterior parietal and motor cortical areas.

ABSTRACT: Studying how motor adaptation to visuomotor rotation for one reach direction generalizes to other reach directions can provide insight into how visuomotor maps are represented and learned in the brain. Previous psychophysical studies have concluded that postadaptation generalization is restricted to a narrow range of directions around the training direction. A population-coding model that updates the weights between narrow Gaussian-tuned visual units and motor units on each trial reproduced experimental trial-by-trial learning curves for rotation adaptation and the generalization function measured postadaptation. These results suggest that the neurons involved in rotation adaptation have a relatively narrow directional tuning width ( approximately 23 degrees ). Population coding models wit

SUBMITTER: Tanaka H 

PROVIDER: S-EPMC2777823 | biostudies-literature | 2009 Nov

REPOSITORIES: biostudies-literature