A Golgy study of cellular morphology in the superficial layers of superior colliculus man, Saimiri, and Macaca.
This is the first published account of a Golgi study of cellular morphology in the superficial layers of the superior colliculi of the squirrel monkey, Saimiri sciureus, the rhesus monkey, Macaca mulatta, and man. The data demonstrates that the basic structure of the superficial laminae of the superior colliculus are essentially similar in all three species. The superficial portion of the primate colliculus is divided into three clearly defined zones: a zone of horizontal cells, a zone of vertical cells, and a zone of optic fibers. The zone of optic fibers comprises at least two sublayers: a superficial zone that is rich in neurons, and a deeper zone composed primarily of fibers. Six cell types are present within the above zones: marginal cells, piriform cells, stellate cells, narrow field vertical cells, and wide field vertical cells. These are similar in morphology and location to cells described previously in the rat, (Langer and Lund, 1974) however, differences have been noted. These include distribution of spines on primary dendrites, patterns of dendritic arborization of narrow field vertical cells, and some details of axonal morphology.
D000328:Adult; D000818:Animals; D001369:Axons / Q000648:ultrastructure; D003712:Dendrites / Q000648:ultrastructure; D006801:Humans; D007231:Infant, Newborn; D008253:Macaca mulatta; D009412:Nerve Fibers / Q000648:ultrastructure; D009474:Neurons / Q000145:classification / Q000648:ultrastructure; D009900:Optic Nerve / Q000166:cytology; D012453:Saimiri; D013477:Superior Colliculi / Q000166:cytology*; D014795:Visual Pathways / Q000166:cytology