Kinematic Features of Laryngeal Motor Control in Parkinson's Disease.
PURPOSE Laryngeal kinematics were examined under high-speed videoendoscopy to examine laryngeal motor control of persons with Parkinson's disease (PD). METHOD A retrospective analysis was performed on 24 people with idiopathic PD and 24 age- and sex-matched controls as they produced repetitions of the utterance /ifi/...