[Chemical heterogenicity of the synaptic organization of different regions of the rabbit cerebral cortex]

In anesthetized rabbits, visual EP was recorded in the temporal cortex, and EP elisited by stimulation of the n. ischiadicus--in the somatosensory cortex. Application of 1% GABA, glycine, and nembutal solutions to the site of EP recordings increased the visual EP and diminished the somatosensory EP. The data obtained seem to corroborate the chemical heterogeneity of synaptic organizations of the visual and somatosensory cortex in the rabbit brain.