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Japanese

Neural network of vestibular nuclear neurons in the semicircular canal system. Yoshio UCHINO 1 , Naoki ISU 2 1Department of Physiology, Tokyo Medical College 2Department of Electrical and Electronics Engineering, Faculty of Engineering, Fukui University pp.854-871
Published Date 1992/10/10
DOI https://doi.org/10.11477/mf.1431900280
  • Abstract
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This review summarized the axonal pathways, projecting targets, somatic location, synaptic properties, and synaptic terminals of vestibular nuclear neurons concerned with the vestibulo-ocular and/or vesti-bulo-collic reflexes. Excitatory secondary vestibular neurons in the anterior, posterior, and horizontal canal systems include vestibulo-oculo-collic neurons which relay both the vestibulo-ocular and vestibulo-collie reflexes, as well as vestibulo-ocular and vestibulo-collic neurons which relay either reflex. Inhibi-tory secondary vestibular neurons in the horizontal canal system include vestibulo-occulo-collic neurons, while those in the vertical canal systems do not. It was suggested that both excitatory and inhibitory vestibular nuclear neurons form synapses mainly on the cell somata and/or proximal dendritres of extra-ocular and neck motoneurons, and that inhibitory vestibulo-ocular neurons form synapses also on the distal dendrites as well. Vestibular neurons exhibite a low rate of synaptic contacts on extraocular motoneurons widely scattered over the motor muclei, and a high rate of contacts on neck motoneurons localized within a narrow area.


Copyright © 1992, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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