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  • Title: Origin, distribution and organization of the serotoninergic innervation in the inferior olivary complex of the rat.
    Author: Compoint C, Buisseret-Delmas C.
    Journal: Arch Ital Biol; 1988 Feb; 126(2):99-110. PubMed ID: 3382319.
    Abstract:
    The serotoninergic innervation of the inferior olivary complex of the rat was studied using a specific immunohistochemical technique. Fibers and varicosities positive for serotonin were present throughout the nucleus. The densest varicosities were found in the lateral portion of the dorsal accessory olive and the caudal portion of the medial accessory olive. The rostral medial accessory olive and the principal olive were sparsely populated with labeled elements. Ultrastructurally, labeled profiles were found in close opposition to small dendrites and to olivary cell bodies, but they did not display any synaptic specialization. Labeled perikaria were found in the periolivary regions, some of them located laterally to the olivary complex are responsible for the serotoninergic innervation of the dorsal accessory olive; some others located dorsally and medially in the nucleus raphe obscurus and raphe pallidus were responsible for the innervation of the medial accessory olive.
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