Joseph M. Furman, MD, PhD, Department of Otolaryngology, University of Pittsburgh Medical Center, Pittsburgh, PA Dr. Furman is Professor in the Departments of Otolaryngology, Neurology, Bioengineering, and Physical Therapy and Director of the Division of Balance Disorders at the University of Pittsburgh and a Fellow of the American Academy of Neurology. He is a practicing neurologist with a special interest in dizziness, disequilibrium, and balance disorders. He also conducts an active research program in human vestibular function. Stephen P. Cass, MD, MPH, Department of Otolaryngology, University of Colorado Health Sciences Center, Denver, CO Dr. Cass is Associate Professor in the Department of Otolaryngology at the University of Colorado, Denver and a Fellow of the American College of Surgeons. Dr. Cass has a clinical surgical practice specializing in disorders of the ear, hearing and balance. Dr. Cass has authored over 50 scientific articles, 33 book chapters and 3 text books. Susan L. Whitney, PT, PhD, Departments of Physical Therapy and Otolaryngology, University of Pittsburgh, Pittsburgh, PA Dr. Whitney is Associate Professor in the Departments of Physical Therapy and Otolaryngology at the University of Pittsburgh and a Fellow of the American Physical Therapy Association. She is a physical therapist whose primary clinical and research interests are related to rehabilitation outcomes of persons with dizziness and balance disorders.