Task-specific sensorimotor adaptation to reversing prisms.

@article{citeulike:1776497, abstract = {We tested between three levels of visuospatial adaptation (global map, parallel feature modules, and parallel sensorimotor transformations) by training subjects to reach and grasp virtual objects viewed through a left-right reversing prism, with either visual location or orientation feedback. Even though spatial information about the global left-right reversal was present in every training session, subjects trained with location feedback reached to the correct location but with the wrong (reversed) grasp orientation. Subjects trained with orientation feedback showed the opposite pattern. These errors were task-specific and not feature-specific; subjects trained to correctly grasp visually reversed-oriented bars failed to show knowledge of the reversal when asked to point to the end locations of these bars. These results show that adaptation to visuospatial distortion--even global reversals--is implemented through learning rules that operate on parallel sensorimotor transformations (e.g., reach vs. grasp).}, address = {York Centre for Vision Research and Canadian Institutes of Health Research Group for Action and Perception, Department of Psychology, York University, Toronto, Ontario, Canada. marotta@cc.umanitoba.ca}, author = {Marotta, J. J. and Keith, G. P. and Crawford, J. D. }, citeulike-article-id = {1776497}, doi = {10.1152/jn.00859.2004}, issn = {0022-3077}, journal = {J Neurophysiol}, keywords = {1099, action, perception}, month = {February}, number = {2}, pages = {1104--1110}, posted-at = {2007-10-16 21:30:16}, priority = {2}, title = {Task-specific sensorimotor adaptation to reversing prisms.}, url = {http://dx.doi.org/10.1152/jn.00859.2004}, volume = {93}, year = {2005} }

TY - JOUR ID - citeulike:1776497 L3 - citeulike-article-id:1776497 TI - Task-specific sensorimotor adaptation to reversing prisms. JF - J Neurophysiol VL - 93 IS - 2 SP - 1104 EP - 1110 AD - York Centre for Vision Research and Canadian Institutes of Health Research Group for Action and Perception, Department of Psychology, York University, Toronto, Ontario, Canada. marotta@cc.umanitoba.ca SN - 0022-3077 N2 - We tested between three levels of visuospatial adaptation (global map, parallel feature modules, and parallel sensorimotor transformations) by training subjects to reach and grasp virtual objects viewed through a left-right reversing prism, with either visual location or orientation feedback. Even though spatial information about the global left-right reversal was present in every training session, subjects trained with location feedback reached to the correct location but with the wrong (reversed) grasp orientation. Subjects trained with orientation feedback showed the opposite pattern. These errors were task-specific and not feature-specific; subjects trained to correctly grasp visually reversed-oriented bars failed to show knowledge of the reversal when asked to point to the end locations of these bars. These results show that adaptation to visuospatial distortion--even global reversals--is implemented through learning rules that operate on parallel sensorimotor transformations (e.g., reach vs. grasp). KW - 1099 KW - action KW - perception AU - Marotta, JJ AU - Keith, GP AU - Crawford, JD PY - 2005/02// UR - http://dx.doi.org/10.1152/jn.00859.2004 ER -