Kinematic and Acoustic Responses to Predictable and Unexpected Auditory Feedback Perturbations in Speakers With and Without Parkinson's Disease

IwPD showed a reduced ability to correct unexpected errors in auditory feedback both acoustically and kinematically but retained the ability to update their speech sensorimotor maps based on predictable errors in auditory feedback. This study expands on existing assessments of language- and speech-related impairments in Parkinson's disease by highlighting important potential differences in sensorimotor control of speech articulation.