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Morphological experiments of the control of jaw movements in the forebrain

Research Project

Project/Area Number 09832009
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 咀嚼
Research InstitutionShimane Medical University

Principal Investigator

TSUMORI Toshiko  Shimane Med.Univ., Depat.Anaromy, Assistant Prof., 医学部, 助手 (30217377)

Co-Investigator(Kenkyū-buntansha) YASUI Yukihiko  Shimane Med.Univ., Depat.Anaromy, Professor, 医学部, 教授 (30174501)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1998: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1997: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywordssubstantia nigra pars reticulata / parafascicular thalamic nucleus / striatum / lateral agranular cortex / 外側無顆粒性皮質 / 大脳皮質 / 大脳基底核 / 視床 / 黒質 / 顎運動
Research Abstract

We have already indicated that the dorsolateral part of the substabtia nigra pars reticulata (SNr), which is one of the major output nuclei of the basal ganglia, plays an important role in the control of jaw movement. The rostroventral part of the lateral agranular cortex (AGi) and the ventrolateral part of the striatum have been known as the area involved in the control of orofacial movement, In the present study, we examined the possible pathways from the dorsolateral part of the SNr to the rostroventral part of the AGl and the ventrolateral part of the striatum relayed by the thalamus using a combined anterograde and retrograde tracing technique.
We first showed that the dorsolateral part of the SNr sent projection fibers to the ventrolateral part of the parafascicular thalamic nucleus (PE). Secondly, we indicated the overlapping distributions of the nigral fibers and the PF neurons projecting to the rostroventral part of the AGl or to the ventrolateral part of the striatum in the ventrolateral part of the PF.This part of the PF contained not only some neurons projecting to the rostroventral part of the AGl, but also many neurons projecting to the ventrolateral part of the striatum. The nigral axon terminals made symmetrical synaptic contacts with the soma and dendrites of the PF neurons projecting to the AGl or to the striatum. Thus, the SNr-PF-AGl and SNr-PF-striatal pathways revealed by the present study may be involved in the control mechanism of orofacial motor functions.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Yukihiko Yasui: "Nigral axon terminals are in contact with parvicellular reticular neurons which project to the motor trigeminal nucleus in the rat." Brain Research. 755・1/2. 219-224 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yukihiko Yasui: "Tectal projections to the parvicellular reticular formation and the upper cervical spinal cord in the rat, with special reference to axon collateral innervation." Brain Research. 804. 149-154 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshiko Tsumori: "Projections from the substantia nigra pars reticulata to the cortex and the striatum relayed by the parafascicular thalamic nucleus in the rat." Neuroscience Research. SUPPL 22. S172 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshiko Tsumori: "Synaptic organization between the nigral fibers and the parafascicular thalamic neurons projecting to the cortex and the striatum in the rat." Acta Anatomica Nipponica. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yukihiko Yasui: "Nigral axon terminals are in contact with parvicellular reticular neurons which project to the motor trigeminal nucleus in the rat." Brain Research. 755・1/2. 219-224 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yukihiko Yasui: "Tectal projections to the parvicellular reticular formation and the upper cervical spinal cord in the rat, with special reference to axon collateral innervation." Brain Research. 804. 149-154 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshiko Tsumori: "Projections from the substantia nigra pars reticulata to the cortex and the striatum relayed by the parafascicular thalamic nucleus in the rat." Neuroscience Research. SUPPL 22. S172 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshiko Tsumori: "Synaptic organization between the nigral fibers and the parafascicular halamic neurons projecting to the cortex and the striatum in the rat." Acta Anatomica Nipponica. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshiko Tsumori: "Demonstration of the corticotectobulbar pathway from the orofacial motor cortex to the parvicellular reticular formation in the rat." Brain Research. 755・1. 151-155 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yukihiko Yasui: "Nigral axon terminals are in contact with parvicellular reticular neurons which project to the motor trigeminal nucleus in the rat." Brain Research. 775・1/2. 219-224 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yukihiko Yasui: "Tectal projections to the parvicellular reticular formation and the upper cervical spinal cord in the rat,with special reference to axon collateral innervation." Brain Research. 804. 149-154 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Toshiko Tsumori: "Projections from the substantia nigra pars reticulata to the cortex and the striatum relayed by the parafascicular thalamic nucleus in the rat." Neuroscience Research. SUPPL 22. S172 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Toshiko Tsumori: "Demonstration of the corticotectobulbar pathway from the orofacial motor cortex to the parvicellular reticular formation in the rat" Brain Research. 755・1. 151-155 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yukihiko Yasui: "Nigral axon terminals are in contact with parvicellular reticular neurons which project to the motor trigeminal nucleus in the rat" Brain Research. 775・1/2. 219-224 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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