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Learning of a novel sensorimotor mapping involving the speech articulators
Kevin J. Reilly, Frank H. Guenther, and Jason A. Tourville

The primary objective of the current investigation is to identify brain regions that transform information about sensory goals for speech into articulatory motor commands that achieve those goals. Given the difficulty of isolating this specific aspect of speech motor control from other, co-occurring, aspects of speech motor planning and execution, a motor learning task was designed that allows for the identification of learning-dependent changes in brain activation based on subjects’ performance on the task. This task was designed to mimic certain processes by which speech sounds are learned and represented in the brain. The patterns of brain activation associated with different stages of learning are compared to identify cortical feedback and feedforward networks supporting motor control of the articulators.

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