[Auditory afference of the central gray tissue in the rat midbrain (morphofunctional and electrophysiological...

Afferent connections between the central gray substance of the midbrain and central nuclei of the inferior colliculi have been revealed by horseradish peroxidase axonal transport technique in albino rats. Functional properties of neurones in the central gray substance of the midbrain were investigated by extracellular recording of their spike activity in response to continuous and amplitude-modulated tones. The results obtained are discussed in relation to integrity of structural and functional organization of the acoustico-vocalizational system of the brain.