![]() ![]() Exposure of a mismatch of 8° for 20–30 min is sufficient to shift the perception of acoustic space by approximately the same amount across subjects and acoustic frequencies. The ventriloquism aftereffect describes an enduring shift in the perception of the spatial location of acoustic stimuli after a period of exposure of spatially disparate and simultaneously presented acoustic and visual stimuli. This report describes similar rapidly induced changes in a cortically mediated perception in human subjects, the ventriloquism aftereffect, which presumably reflects a corresponding change in the cortical representation of acoustic space. There have also been several examples of rapidly induced changes in cortical neuronal response properties, for example, by intracortical microstimulation or by classical conditioning paradigms. This has led to inferences that the changes in cortical representations parallel and account for the improvement in performance during the period of skill acquisition. ![]() Rapidly induced auditory plasticity: The ventriloquism aftereffectĬenter for Neuroscience and Section of Neurobiology, Physiology and Behavior, University of California at Davis, 1544 Newton Ct., Davis, CA 95616ĪBSTRACT Cortical representational plasticity has been well documented after peripheral and central injuries or improvements in perceptual and motor abilities. ![]()
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