Abstract

In albino rabbits, horseradish peroxidase injections confined to vestibular nuclei retrogradely labeled neurons in the dorsal cap of the contralateral inferior olive. Mapping with stimulating electrodes revealed that stimulation of the lateral aspect of the medial vestibular nucleus and the medial aspect of the inferior vestibular nucleus evoked field potentials representing antidromic activation of contralateral dorsal cap neurons. These responses interfered with the antidromic response evoked from the contralateral flocculus and orthodromic responses evoked from the contralateral retina, suggesting that dorsal cap neurons which both receive retinal input and project to the flocculus send collaterals to vestibular nuclei.

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