Neural correlates of perceptual learning in a sensory-motor, but not a sensory, cortical area.

@article{citeulike:2547218, abstract = {This study aimed to identify neural mechanisms that underlie perceptual learning in a visual-discrimination task. We trained two monkeys (Macaca mulatta) to determine the direction of visual motion while we recorded from their middle temporal area (MT), which in trained monkeys represents motion information that is used to solve the task, and lateral intraparietal area (LIP), which represents the transformation of motion information into a saccadic choice. During training, improved behavioral sensitivity to weak motion signals was accompanied by changes in motion-driven responses of neurons in LIP, but not in MT. The time course and magnitude of the changes in LIP correlated with the changes in behavioral sensitivity throughout training. Thus, for this task, perceptual learning does not appear to involve improvements in how sensory information is represented in the brain, but rather how the sensory representation is interpreted to form the decision that guides behavior.}, address = {Department of Neuroscience, 116 Johnson Pavilion, 3610 Hamilton Walk, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6074, USA.}, author = {Law, Chi-Tat T. and Gold, Joshua I I. }, citeulike-article-id = {2547218}, doi = {http://dx.doi.org/10.1038/nn2070}, issn = {1097-6256}, journal = {Nat Neurosci}, keywords = {arash, brian, heather, jessica, nichola, perceptual\_learning, shiva, yigal}, month = {March}, posted-at = {2008-03-17 17:05:04}, priority = {2}, title = {Neural correlates of perceptual learning in a sensory-motor, but not a sensory, cortical area.}, url = {http://dx.doi.org/10.1038/nn2070}, year = {2008} }

TY - JOUR ID - citeulike:2547218 L3 - citeulike-article-id:2547218 TI - Neural correlates of perceptual learning in a sensory-motor, but not a sensory, cortical area. JF - Nat Neurosci AD - Department of Neuroscience, 116 Johnson Pavilion, 3610 Hamilton Walk, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6074, USA. SN - 1097-6256 N2 - This study aimed to identify neural mechanisms that underlie perceptual learning in a visual-discrimination task. We trained two monkeys (Macaca mulatta) to determine the direction of visual motion while we recorded from their middle temporal area (MT), which in trained monkeys represents motion information that is used to solve the task, and lateral intraparietal area (LIP), which represents the transformation of motion information into a saccadic choice. During training, improved behavioral sensitivity to weak motion signals was accompanied by changes in motion-driven responses of neurons in LIP, but not in MT. The time course and magnitude of the changes in LIP correlated with the changes in behavioral sensitivity throughout training. Thus, for this task, perceptual learning does not appear to involve improvements in how sensory information is represented in the brain, but rather how the sensory representation is interpreted to form the decision that guides behavior. KW - arash KW - brian KW - heather KW - jessica KW - nichola KW - perceptual_learning KW - shiva KW - yigal AU - Law, Chi-Tat AU - Gold, Joshua I PY - 2008/03/09/ UR - http://dx.doi.org/10.1038/nn2070 ER -