Cytology of periolivary cells and the organization of their projections in the cat

摘要: Projections of cells located near principal nuclei the superior olive, periolivary cells, were studied by injecting horseradish peroxidase or fluorescent tracers into cochlea, cochlear nucleus, and inferior colliculus. At least two distinct cytological classes found to project each these structures. "Large" "small" olivocochlear labelled. Their cytology locations be as had been previously described. Some also nucleus. Other major cell that nucleus include a lateral group multipolar whose members are around ipsilateral olive have coarse, darkly staining Nissl substance. The other class projects is small ventral trapezoid body. This characterized its size only one intensely clumps from both sides. Periolivary colliculus medial groups. Cells These in shape contain lightly staining, flocculent They predominantly immediately olive. arise region clumped often lie "large" which they resemble material, but distinguished latter Protargol material having ring-type axosomatic endings. appearance six make it possible recognize them nonexperimental infer with confidence what their projections are. results show considerable organization little understood