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The relationship between the efferents of the cortex and basal ganglia in the control of jaw movements

Research Project

Project/Area Number 08835014
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

YASUI Yukihiko  Shimane Med.Univ., Dept.of Anatomy, Professor, 医学部, 教授 (30174501)

Co-Investigator(Kenkyū-buntansha) TSUMORI Toshiko  Shimane Med.Univ., Anatomy, Assistant Prof., 医学部, 助手 (30217377)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1997: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1996: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywordscerebral cortex / basal ganglia / substantia nigra / red nucleus / superior colliculus / reticular formation / jaw movement
Research Abstract

The parvicellular reticulr formation (RFp) has been known to contain many premotor neurons for the motor trigeminal nucleus. We has already indicated that the RFp receives nigral fibers from the dorsolateral part of the substantia nigra pars reticulata (SNr) which is one of the major output nuclei of the basal ganglia, and further that the dorsolateral part of the SNr sends projection fibers to the lateralmost part of the superior colliculus (SC), where many neurons projecting to the RFp are distributed.
In the present study, we first showed that the dorsolateral part of the SNr sent projection fibers to the dorsal part of the red nucleus, where many neurons projecting to the RFp existed. In this case, the nigral axon terminals made symmetrical synaptic contacts with somata and proximal dendrites of the rubral neurons sending their axons to the RFp. The dorsal part of the red nucleus has been known to receive cortical fibers from the jaw motor area.
Secondly, we indicated the overlapping distributions of the cortical fibers from the jaw motor area and the tectal neurons projecting to the RFp (tecto-RFp neurons) in the lateralmost part of the SC.The cortical axons were in asymmetrical contact with dendrites of the tecto-RFp neurons. In the lateralmost part of the SC,the overlapping distributions of the nigral fibers from the dorsolateral part of the SNr and the tecto-RFp neurons were also found, as reported previously. The nigral axon terminals made symmetrical contacts with somata and dendrites of the tecto-RFp neurons. Thus, the convergent projections from the jaw motor cortex and the basal ganglia to the tectal neurons sending their axons to the RFp were revealed by the present study.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Yukihiko Yasui: "A nigro-rubro-bulbar pathway to the parvicellular reticular formation in the rat" Neuroreport. 7・6. 1157-1160 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yukihiko Yasui: "Control pathways from the basal ganglia to the orofacial motor system in the lower brainstem" Acta Anatomica Nipponica. 71・3. 177-182 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 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)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Toshiko Tsumori: "Organization of the nigro-tecto-bulbar pathway to the parvicellular reticular formation : a light-and electron-microscopic study in the rat" Experimental Brain Research. 116・2. 341-350 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 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. 775・1/2. 219-224 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Yasui, T.Tsumori, A.And T.Domoto: "A nigro-rubro-bulbar pathway to the parvicellular reticular formation in the rat." Neuroreport. 7 (6). 1157-1160 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Yasui and T.Tsumori: "Control pathways from the basal ganglia to the orofacial motor system in the lower brainstem." Acta Anatomica Nipponica. 71 (3). 177-182 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Tsumori, K.Ono, T.Kishi and Y.Yasui: "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)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Tsumori and Y.Yasui: "Organization of the nigro-tecto-bulbar pathway to the parvicellular reticular formation : a light- and electron-microscopic study in the rat." Experimental Brain Research. 116 (2). 341-350 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Yasui, T.Tsumori, K.Ono and T.Kishi: "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)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yukihiko Yasui: "A nigro-rubro-bulbar pathway to the parvicellular reticular formation in the rat" Neuroreport. 7・6. 1157-1160 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yukihiko Yasui: "Control pathways from the basel ganglia to the orofacial motor system in the lower brainstem" Acta Anatomica Nipponica. 71・3. 177-182 (1996)

    • Related Report
      1997 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] Toshiko Tsumori: "Organization of the nigro-tecto-bulbar pathway to the parvicellular reticular formation : a light- and electron-microscopic study in the rat" Experimental Brain Research. 116・2. 341-350 (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
  • [Publications] Yukihiko Yasui: "A nigro-rubro-bulbar pathway to the parvicellular reticular formation in the rat" Neuro Report. 7・6. 1157-1160 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yukihiko Yasui: "Control pathways from the basal ganglia to the orofacial motor system in the lower brainstem" Acta Anatomica Nipponica. 71・3. 177-182 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Toshiko Tsumori: "Demonstration of the corticotectobulbar pathway from rhe orofacial motor cortex to the parvicellular reticular formation in the rat" Brain Research. (in press). (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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