By Kyle Mittan, News Writer, University Communications, University of Arizona Parkinson’s disease is perhaps best known for its movement-related symptoms, particularly tremors and stiffness. But the disease is also known to hinder vocal production, giving those with Parkinson’s a soft monotonous voice. Those Parkinson’s soft-voice symptoms, research has suggested, often appear much earlier in the … Continue reading Research Identifies Link Between Parkinson’s Gene and Soft Voice