VIDEO 7 3 Spinocerebellar ataxia type 2

VIDEO 73 Spinocerebellar ataxia type 2. The first video segment shows the 55yearold woman discussed in CASE 72 with spinocerebellar ataxia type 2. She has limited upward gaze and slow saccadic eye movements without nystagmus or hypermetric or hypometric saccades. She has dysmetria on fingernosefinger tests and an overshoot in finger chase tests. She also has impaired rapid alternating movements. Her facial expression is hypomimic, and her gait is wide based and shows variable stride length. The second video segment shows the same patient 5 years later. Her symptoms have progressed. She has ophthalmoparesis, particularly in vertical gaze, and her saccadic eye movements have become very slow.