[Neuroanatomic study of the efferent vestibular system I: distribution of the somas in the brain stem. A qualitative study]

EVN are studied in the chinchilla by means of HRP tract tracer, using TMB and DAB as chromagen. Three groups of EVN somas have been identified within the brainstem; located in the proximity of the vestibular nuclei (I), the facial nerve genu (II) and the abducens nucleus (III). The extension, localization and anatomical relations have been determined.