1. Department of Biobehavioral Sciences, Teachers College, Columbia University, 525 West 120th Street, New York, New York 10027, USA sh3014@tc.columbia.edu
2. Department of Speech and Hearing Science, Arizona State University, Tempe, Arizona 85287, USA yjiao16@asu.edu
3. Department of Communication Disorders & New Zealand Institute of Language, Brain & Behaviour, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand megan.mcauliffe@canterbury.ac.nz
4. Department of Speech and Hearing Science and School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe Arizona 85287, USA visar@asu.edu
5. Centre of Parkinson and Movement Disorders, Department of Neurology, National Taiwan University Hospital, College of Medicine, National Taiwan University, No.7, Chung-Shan South Road, Taipei, 100, Taiwan robinwu@ntu.edu.tw
6. Department of Biobehavioral Sciences, Teachers College, Columbia University, 525 West 120th Street, New York, New York 10027, USA elevy@tc.columbia.edu