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Otolith-activated vestibuloocular reflex arc

Research Project

Project/Area Number 14571638
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Otorhinolaryngology
Research InstitutionTokyo Medical University

Principal Investigator

UCHINO Yoshio  Tokyo Medical University, Department of Physiology, Professor, 医学部, 教授 (00086555)

Co-Investigator(Kenkyū-buntansha) IMAGAWA Midori  Tokyo Medical University, Department of Physiology, Research Associate, 医学部, 助手 (50074646)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2003: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2002: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywordsvestibular system / oculomotor / otolith / dizziness / semicircular canal / linear accereation / utriculus / sacculus / 交連線維
Research Abstract

1 Convergence of the anterior semicircular canal and otolith afferents on cat single vestibular neurons. Zhang et al. Exp Brain Res (2002).
The convergence between the anterior canal (AC) and utricular (UT) inputs, as well as the convergence between AC and saccular (SAC) inputs in single vestibular neurons were investigated. Forty percent neurons received convergent inputs after stimulation of the AC/UT nerves. Majority of convergent neurons sent axons to the upper cervical spinal cord through the medial vestibulospinal tract. Similar results were observed between AC and SAC inputs in single vestibular neurons.
2. Properties of utricular-activated vestibular neurons that project to the contralateral vestibular nuclei in the cat. Bai et al. Exp Brain Res(2002).
The properties of utricular (UT)-activated vestibular neurons that send axons to the contralateral vestibular nuclei (commissural neurons) were investigated. Majority of the commissural neurons received inonosynaptic inputs from the … More UT nerve. Twelve, 5, and 10 out of 27 comniissural neurons were located in the medial, lateral and descending vestibular nuclei, respectively. Majority of the commissural neurons also sent axons to the upper cervical spinal cord through the medial vestibulospinal tract.
3. Morphology of physiologically identified otolith-related vestibular neurons in cats. Meng et al. Neuroscience letters (2002).
Otolith nerve-activated vestibular neurons were investigated using intracellular injections of HRP. The labeled otolith-related neurons were pyramidal, elongated and ovoid in shape. Most of labeled cells were medium to large size.
4. Eye movements evoked by the selective stimulation of the utricular nerve in cats. Goto et al. Auris Nasus Larynx (2003)
Eye movements evoked by otolith organ are not well-investigated. In the absence of anesthesia in decerebrate cats, we found ipsilaterally directed horizontal eye movements in both eyes after stimulation of the utricular (UT) nerve. This is the first report to our knowledge in which UT nerve-evoked horizontal eye movements documented. These results confirm the known monosynaptic connections from UT afferents to the ipsilateral abducens nucleus, neurons (Uchino et at. 1994). Less

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] Zhang X: "Conbergence of the anterior semicircular canal and otolith Afferents on cat single vestibular neurons"Exp Brain Res. 147. 407-417 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Bai R: "Properties of utricular-activated vestibular neurons that project to the contralateral vestibular nuclei in the cat."Exp Brain Res. 147. 419-425 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Meng H: "Morphology of physiologically identified otolith-related vestibular neurons in cats."Neurosci Lett. 331. 37-40 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Goto F: "Eye movements evoked by the selective stimulation of the Utricular nerve in cats."Auris Nasus Larynx. 30. 341-348 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Uchino Y: "Role of cross-striolar and commissural inhibition in the vestibulocollic reflex."Prog Brain Res. 143. 403-409 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Sugita A: "Properties of horizontal semicircular canalnerve-activated vestibulospinal neurons in cats"Exp Brain Res. in press.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 内野善生: "めまいと平衡調節"金原出版. 167 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Zhang X: "Conbergence of the anterior seniicircular canal and otolith Afferents on cat single vestibular neurons."Exp Brain Res.. 147. 407-417 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Bai R: "Properties of utrucular-activated vestibular neurons that project to the contralateral vest ibular nuclei in the cat."Exp Brain Res.. 147. 419-425 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Meng H: "Morphology of physiologically identified otolith-related vestibular neurons in cats."Neurosci Lett.. 331. 37-40 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Goto F: "Eye movements evoked by the selective stimnulation of the Utricular nerve in cats."Auris Nasus Larynx. 30. 341-348 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Uchino Y: "Role of cross-striolar and commissural inhibition in the vestibulocollic reflex."Prog Brain Res.. 143. 403-409 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Sugita A: "Properties of horizontal semicircular canalnerve-activated vestibulospinal neurons in cats."Exp Brain Res.. (in press). (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Zhang X: "Conbergence of the anterior semicircular canal and otolith Afferents on cat single vestibular neurons"Exp Brain Res. 147. 407-417 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Bai R: "Properties of utricular-activated vestibular neurons that project to the contralateral vestibular nuclei in the cat."Exp Brain Res. 147. 419-425 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Meng H: "Morphology of physiologically identified otolith-related vestibular neurons in cats."Neurosci Lett. 331. 37-40 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Goto F: "Eve movements evoked by the selective stimulation of the Utricular nerve in cats."Auris Nasus Larynx. 30. 341-348 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Uchino Y: "Role of cross-striolar and comiissural inhibition in the vestibulocollic reflex."Prog Brain Res. 143. 403-409 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Sugita A: "Properties of horizontal semicircular canalnerve-activated vestibulospinal neurons in cats"Exp Brain Res. in press.

    • Related Report
      2003 Annual Research Report
  • [Publications] 内野善生: "めまいと平衡調節"金原出版. 167 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Sato H et al.: "Convergence of ipsilateral semicircular canal inputs onto single vestibular nucleus neurons in cats"Exp Brain Res.. 145. 351-364 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Zhang X et al.: "Convegence of the anterior semicircular canal and otolith afferents on cat single vestibular nucleus neurons"Exp Brain Res.. 147. 407-417 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Bai R et al.: "Properties of utricular-activated vestibular neurons that project to the contralateral vestibular nuclei in the cat"Exp Brain Res.. 147. 419-425 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Meng H et al.: "Morphology of physiologically identified otolith-related vestibular neurons in cats"Neuroscience Letters. 331. 37-40 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 内野善生(単著): "めまいと平衡調節"金原出版. 1-167 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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