The so-called vestibulocerebellum consists of the flocculus, nodulus, and vermis of the cerebellum - -basically the parts other than the cerebellar hemispheres. As these damage to these parts of the cerebellum is accompanied by unsteadiness and nystagmus, without much clumsiness of the limbs, one of the paraneoplastic syndromes is attribtued to vestibulocerebellar disease.