1. From the Departments of Neurology and
2. From the Departments of Neurology and2Visual Sciences Research Center, Case Western Reserve University and University Hospitals of Cleveland, Cleveland, Ohio; and
3. Visual Sciences Research Center, Case Western Reserve University and University Hospitals of Cleveland, Cleveland, Ohio; and
4. Yerkes National Primate Research Center and4Department of Neurology, Emory University, Atlanta, Georgia.
5. From the Departments of Neurology and5Neuroscience and the2Visual Sciences Research Center, Case Western Reserve University and University Hospitals of Cleveland, Cleveland, Ohio; and