| Abstract: | Unit responses in the anterior sigmoid gyrus of cats anesthetized with chloralose (70 mg/kg) to vestibular nerve stimulation and their interaction with responses to acoustic and facial nerve stimulation were investigated. The focus of maximal activity of the vestibular projection was shown to lie a little rostrally to the anterior suprasylvian sulcus. The modality specificity of this part of the cortex to vestibular impulses is reflected in the shortest values of latent periods and the distinct phasic character of the responses, and also in the numerical preponderance of neurons with short-latency responses. Although considerable topographic overlapping of the vestibular projection by acoustic and somatosensory (facial zone) projections is found, the vestibular afferent input predominates over the other afferent inputs.I. P. Pavlov Institute of Physiology, Academy of Sciences of the USSR, Leningrad. Translated from Neirofiziologiya, Vol. 13, No. 4, pp. 353–358, July–August, 1981. |
