Visual-shift adaptation is composed of separable sensory and task-dependent effects.

ABSTRACT: Visuomotor coordination requires both the accurate alignment of spatial information from different sensory streams and the ability to convert these sensory signals into accurate motor commands. Both of these processes are highly plastic, as illustrated by the rapid adaptation of goal-directed movements following exposure to shifted visual feedback. Although visual-shift adaptation is a widely used model of sensorimotor learning, the multifaceted adaptive response is typically poorly quantified. We present an approach to quantitatively characterizing both sensory and task-dependent components of adaptation. Sensory aftereffects are quantified with "alignment tests" that provide a localized, two-dimensional measure of sensory recalibration. These sensory effects obey a precise form of "addit

SUBMITTER: Simani MC 

PROVIDER: S-EPMC2536598 | biostudies-literature | 2007 Nov

REPOSITORIES: biostudies-literature