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Functional Importance of Mutual Isthmo-Tectal Projection in Visually Guided Behavior in the Frog

Research Project

Project/Area Number 10640669
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 動物生理・代謝
Research InstitutionKYUSHU INSTITUTE OF TECHNOLOGY

Principal Investigator

MATSUMOTO Nobuyoshi  Kyushu Institute of Technology, Faculty of Computer Science and Systems Engineering, 情報工学部, 教授 (80029545)

Co-Investigator(Kenkyū-buntansha) NAKAGAWA Hideki  Kyushu Institute of Technology, Faculty of Computer Science and Systems Engineering, 情報工学部, 助手 (80212083)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1998: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsNucleus Isthmi / Optiac Tectum / frog / Current Source Density Analysis
Research Abstract

Nucleus lsthmi receives only input from ipsilateral optic tectum, and it project back to ipsilateral and contralateral optic tectum. This research was carried out to elucidate the functional importance of isthmo-tectal projection.
Nucleus Isthmi was electrically stimulated and recorded field potentials from ipsi-and contralateral optict tectum. Current source density analysis was applied to the field potential and depth profiles of the sink and the source were calculated. The following results were obtained.
Contralateral Isthmo-tectal Projection
There are two sinks with short latency. One fiber group at layer 8 contact monosynaptically to the layer 6 neurons. The other fiber group at superficial tactal layer make monosynaptic contacts to the neurons in layer 8. Existence of the third sink with long latency suggests that neurons in layer 6 receives polysynaptic input from Nucleus Isthmi.
Ipsilateral Isthmo-tectal Projection
The sink with short latency indicates that neurons in layer 6 receives monosynaptic inputs in layer 8. The other sink with long latency indicates that neurons in layer 6 which projects dendrite to layer 9 receives polysynaptic inputs.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] Hoshino, N., Nakagawa, H., Matsumoto, N.: "Current source density analysis of the isthemotectal projection in the frog"Abstracts of Society for Neuroscience 28th Annual Meeting. 1364-1364 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakagawa, H., Matsumoto, N.: "Current source density analysis of on/off channel in the frog optic tectum"Progress in Neurobiology. 61-1. 1-44 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakagawa, H., Matsumoto, N. et.al.: "Quantitative study of the frog escape behavior to an appraching object"Zoological Science 16 Supplement. 16. 111-111 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakagawa H., Hamada A. and Matsumoto N,: "Principal component analysis of current source density distribution in the frog optic tectum"Proceedinds of the 9th annual Meeting of the Japanese Society for Comparative Physiol. And Biochem. 15 No.4. 264 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakagawa H. and Matsumoto N.: "The ON and OFF channels of the frog optic tectum revealed by a current source density analysis"Abstract of The Fifth International Congress of Neuroethology, Aug, pp.23-28, San Diego. 30 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakagawa H. and Matsumoto N.: "ON and OFF channels of the frog optic tectum revealed by a current source density analysis"Journal of Neurophysiology. 80, No.4. 1886-1899 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakagawa H. et al.: "Quantitative study of the frog escape behavior to an approaching object"Zoological Science, Supplement 16. 16. 111 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Hoshino N., Nakagawa H. and Matsumoto N.: "Current source density analysis of the isthmotectal projection in the frog"Abstract of 28th Annual Meeting Society for Neuroscience, Part 2. 1364 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nakagawa H. and Matsumoto N.: "Current source density analysis of ON/OFF channels in the frog optic tectum"Progress in Neurobiology. 61, No.1. 1-44 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Hoshino N.,Nakagawa H.,Matsumoto N.: "Carrent sourcedensity analysis of the isthmotecfal projection in the frog"Abstracts of 28th Annual Meeting Society for Nearoscience. 2. 1364-1364 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Nakagawa H.Matsumoto N.: "Carrent sourcedensity analysis of ON/OFF channels in the frog optictectum"Progress in Nearobiology. 61・1. 1-44 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Nakagawa H.Matsumoto N.etc: "Quantitative study of the frog escape beharior to an approaching object"Zoological Science 16 Supplement. 16. 111-111 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Nakagawa,H.Hanada,A.and Matsumoto,N.: "Principal componentanalysis of current source density distribution in the frog optic tectum" Proceedings of the 9the Annual Meeting of the Japanese Society for Comp.Physiol.and Biochem.15・4. 264-264 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Nakagawa N.Matsumoto: "The ON and OFF channels of the frog optic tectum revealed by a current source density analysis" The Fifth International Corigress of Neuroethology Abstract Aug 23-28. 30-30 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Nakagawa N.Matsumoto: "ON and OFF channels of the frog optic tectum revealed current source density analysis" Journal of Neurophysiology. 80・4. 1886-1899 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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