Abstract
Morest’s subdivisions of the cat’s medial geniculate body (MGB) differ from one another in neuronal morphology, ascending connections and cortical projections (Morest, 1964, 1965; Sousa-Pinto, 1973). Differences in auditory coding, particularly frequency tuning properties, have been observed between the pars magnocellularis and pars lateralis, whereas only few cells in the pars dorsalis respond to acoustic stimulation (Aitkin, 1966). The aim of this study was the analysis of coding properties of the different nuclei of the MGB to simple acoustic stimuli, with emphasis on response latencies, temporal response patterns, frequency tuning and binaural properties.
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