ネコ視索核より前庭核への直接投射について  [in Japanese] Direct Projection from the Nucleus of the Optic Tract to the Vestibular Nuclei in Cats  [in Japanese]

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Author(s)

    • 渡辺 昭司 WATANABE Shoji
    • 聖マリアンナ医科大学耳鼻咽喉科学教室 Department of Otolaryngology, St. Marianna University School of Medicine
    • 加藤 功 KATO Isao
    • 聖マリアンナ医科大学耳鼻咽喉科学教室 Department of Otolaryngology, St. Marianna University School of Medicine
    • 佐藤 成樹 SATO Shigeki
    • 聖マリアンナ医科大学耳鼻咽喉科学教室 Department of Otolaryngology, St. Marianna University School of Medicine

Abstract

The nucleus of the optic tract (NOT) serves as an important visuo-motor relay between the retina and preoculomotor structures that mediate horizontal optokinetic nystagmus. In the present study, projections from the NOT in the brainstem were investigated using anterograde and retrograde tracers. Following biocytin injections into NOT, labeled fibers were observed in each of the following efferent pathways: 1) those that project to the contralateral NOT via the posterior commissure; 2) those that course through the nucleus reticularis pontis oralis to terminate the nucleus reticularis tegmenti pontis; and 3) those that descend via the medial lemniscus to the level of the medulla to terminate in the dorsolateral pontine nucleus, nucleus prepositus hypoglossi, descending and medial vestibular nucleus and the dorsal cap of the inferior olive. The projection from the NOT to the vestibula nuclei were demonstrated following WGA-HRP injections into the vestibular nuclei. Direct projections from the NOT to the descending and medial vestibular nuclei may contribute to the residual optokinetic responses of the vestibular nuclei neurons following cerebellar or inferior olivary lesions.

Journal

  • Equilibrium Research

    Equilibrium Research 54(4), 370-378, 1995-08-01

    Japan Society for Equilibrium Research

References:  39

Codes

  • NII Article ID (NAID)
    10008708067
  • NII NACSIS-CAT ID (NCID)
    AN00001485
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03855716
  • Data Source
    CJP  J-STAGE 
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