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- OKADA Hiromasa
- Department of Physiology, Tottori University School of Medicine
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- NAKANO Osamu
- Department of Physiology, Tottori University School of Medicine
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- OKAMOTO Kyoko
- Department of Physiology, Tottori University School of Medicine
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- NAKAYAMA Kimihiro
- Department of Physiology, Tottori University School of Medicine
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- NISIDA Isamu
- Department of Physiology, Tottori University School of Medicine
Abstract
The central path of the light reflex via the sympathetic nerve in the cat was studied by observing reflex inhibition of the activity in the long ciliary nerve after various combined lesions of the brain stem and optic tract. From the results a possible schema was induced.<BR>The inhibitory path from the unilateral eye to the cilio-spinal centers entered into the midbrain through the bilateral optic tracts after a partial decussation in the optic chiasma. From there a part of them descended the midbrain, pons and medulla oblongata on each side, while the other descended the contralateral brain stem after a partial decussation both in the posterior commissure and ventral to the Sylvian aqueduct. Furthermore, this descending path reached the bilateral cilio-spinal centers after forming the 3rd partial decussation in the spinal cord. In the medulla oblongata this inhibitory path occupied a position in the ventral reticular formation.
Journal
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- The Japanese Journal of Physiology
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The Japanese Journal of Physiology 10 (6), 646-658, 1960
THE PHYSIOLOGICAL SOCIETY OF JAPAN