[Subclinical vestibular abnormalities in Parkinson's disease (author's transl)].

The material of this study comprised 70 patients who suffered from Parkinson's disease and 77 healthy individuals, who were examined by the same methods, for an accurate comparative evaluation of the results. Following the clinical examination, and E.N. Graphic examination was done an subsequently the pendular rotation test was performed. In order to obtain a better statistical evaluation, the material was studied successively according to the age of the patients, the existence of arteriosclerotic lesions in the fundi, the type and duration of the disease, the unilateral of bilateral manifestations and the use of drugs. While the E.N. Graphic examination revealed spontaneous nystagmus in 20 p. 100 of the cases, the pendular rotation test revealed clear cut abnormalities mainly of the central type in 75 p. 100 of the cases.