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jws-mds.20644.mpg13918K Segment 1.Segment 1 shows severe gait ataxia and loss of postural reflexes. Segment 2.Corresponding to finger-to-nose test, shows incoordination, dysmetria and coarse terminal tremor predominating on his left side. Segment 3.Segment 3 shows patellar hyperreflexia and Babinski sign. Segment 4.Segment 4 shows saccadic intrusions interrupting smooth-pursuit eye movements. This video presentation has been abbreviated. The full version will appear on theMovementDisorders DVD Supplement, which is issued bi-annually.

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