[Spontaneous and optokinetic nystagmus in lesions of the cerebellar hemispheres]

The reported study was carried out in 48 patients with damage to cerebellar hemispheres. Horizontal spontaneous nystagmus with closed eyes was found in 45.8% ow cases, while it was present in only 14.5% of cases with open eyes. The author thinks that the recorded spontaneous nystagmus was of direct cerebellar origin. No evidence effect was observed of the central compensation on the disappearance of spontaneous nystagmus. The optokinetic nystagmus was found to belong to frequent oculomotor disturbances in lesions of cerebellar hemispheres.