Motor perseveration is an early sign of Parkinson's disease.

Stoffers, D; Berendse, H W; Deijen, J B; Wolters, E C · Neurology · 2001

cross_sectional · Level IV

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Abstract

Perseveration in the generation of random motor behavior was examined by means of the Vienna perseverance task in groups of de novo (n = 18) and treated (n = 18) patients with early PD, and in control subjects (n = 18). In comparison with control subjects, both the de novo and treated patients with PD were relatively unable to generate random motor sequences, indicating a decreased ability to switch cortical behavioral programs in PD. An impairment of random motor generation appears to be a very early feature of PD.

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