T2-weighted Magnetic Resonance Imaging. Sequences show degeneration in the right frontoparietal cortex, deep gray structures, and the cerebral peduncle.
Video 1
Arm Elevation While Walking. There is intermittent tremor of the left thumb and first finger during the videotape. When he stops walking, the left arm is no longer elevated but there is some residual posturing (fisting) of the left hand. The patient provided signed, written consent to be videotaped.