The Localization of the Ocular Parasympathetic Preganglionic Neurons and the Efferents from the Edinger-Westphal Nucleus to the Spinal Cord in the Rat : an HRP Study

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The localization of the ocular parasympathetic preganglionic neurons and the efferents from the Edinger-Westphal (EW) nucleus to the spinal cord in the rat were investigated by means of the horseradish peroxidase (HRP) method. The ocular preganglionic neurons, which were identified after HRP bathing of the oculomotor nerve, were located in the ventral part of the EW nucleus, the mesencephalic tegmental area immediately ventral to central gray and the medial-most part of the chief oculomotor nuclei. The finding that substantial numbers of EW neurons were labeled after HRP injection into the spinal cord confirmed the existence of EW-spinal projections in the rat. Moreover, the ocular parasympathetic preganglionic neurons in the EW nucleus and the EW-neurons projecting to the spinal cord seemed to be independent of each other due to their complementary distribution.
札幌医科大学の論文
1979-12-01