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Information processing mechanisms in the optic tectum.

Research Project

Project/Area Number 01440019
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 神経解剖学
Research InstitutionNippon Medical School

Principal Investigator

ITO Hironobu  Nippon Medical School, Dept. of Anatomy, Professor, 医学部, 教授 (30046065)

Co-Investigator(Kenkyū-buntansha) KISHIDA Reiji  Yamaguchi University, Sch. of Med., Dept. of Anat., Prof., 医学部, 教授 (50046132)
YOSHIMOTO Masami  Nippon Medical School, Dept. of Anatomy, Assistant, 医学部, 助手 (00182832)
UENO Noriyuki  Nippon Medical School, Dept. of Anatomy, Assistant, 医学部, 助手 (20184955)
TANUMA Kumiko  Nippon Medical School, Dept. of Anatomy, Associate Prof., 医学部, 助教授 (90090977)
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥15,600,000 (Direct Cost: ¥15,600,000)
Fiscal Year 1990: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1989: ¥12,300,000 (Direct Cost: ¥12,300,000)
KeywordsOptic Tectum / Visual / Somatosensory / Trigeminal nerve / Correlation center / Information processing / Teleost / Reptile
Research Abstract

1) Teleost Optic Tectum
In order to clarify correlation mechanisms for two different sensory modalities in the teleost optic tectum, synaptic distribution upon neurons of the nucleus corticalis was studied. The large cells of the@nucleus corticalis are located along the ventromedial edge of the rostral tectum having extremely long dendrites into, two tectal layers, stratum fibrosum et griseum superficiale and stratum griseum centrale. The cortical neurons were retrogradely labeled by injecting HRP into the corpus glomerulosum, and the tissue was treated for electron microscopy.
At least four types of terminals, S2, F2, S4, and S5 were found on the labeled dendrites. S2 terminals showed degenerative changes after contralateral eye enucleation. S4 and S5 terminals were labeled by injecting biocytin into the trigeminal sensory nucleus in the meduffa oblongata. It is highly possible that one particular cortical neuron receives both visual and somatosensory information at the same time.
2) Reptile Optic Tectum
Following HRP injections into the nucleus of lateral descending trigeminal tract, which is a primary sensory nucleus of the trigeminal nerve in ball pythons, labeled fibers and terminals appeared in layers 5-13 of the contralateral optic tectum. Labeled terminals were densely distributed in layers 6-8. After HRP injections into the optic nerve, fibers and terminals in layers 7b-13 were labeled in the contralateral optic tectum. Labeled fibers and terminals were densely packed in layers 12-13. In order to identify neurons which can receive both somatosensory and visual information, the optic tectum was stained with the Golgi method, and tectal neurons were classified on the basis of dendritic arborization. Some neurons have an apical dendrite which arborizes in two levels, layers 6-8 and layers 12-13. Possibility of correlation of visual and somatosensory modalities on such neurons was discussed.

Report

(3 results)
  • 1991 Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (32 results)

All Other

All Publications (32 results)

  • [Publications] Ito,H.and M.Yoshimoto: "Cytoarchitecture and fiber connections of the nucleus lateralis valvulae in the carp (Cyprinus carpio)." J.Comp.Neurol.298. 1-15 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Miguel-Hidalgo,J.J.,H.Ito,and J.Lara: "Distribution of calbindinlike immunoreactive structures in the optic tectum of normal and eye-enucleated cyprinid fish." Cell Tissue Res.265. 511-516 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ito,H.,M.Yoshimoto,H.Uchiyama,H.Somiya,and K.Negishi: "Changes in retinal projections and ganglion cell morphology after unilateral enucleation in carp." Brain,Behave and Evol.(1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Somiya,H.,Yoshimoto and H.ito: "Cytoarchitecture and fiber connections of the Edinger-Westphal nucleus in the filefish." Proc.R.Soc.Lond.B.(1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小林 園生,岸田 令次,田中 良英,R.C.Goris,吉本 正美,伊藤 博信: "ニシキヘビ視監における赤外線と視覚投射線維の分布"

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ito,H.and M.Yoshimoto: "Synaptic distrbution on neurons of the nucleus corticalis in a cichlid fish (Tilapia nilotica)."

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 伊藤 博信: "脳の進化(佐藤 昌康編。「ブレインサイエンスIII」137ー156頁)" 朝倉書店(東京), 19 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 伊藤 博信,吉本 正美: "神経系(羽生 功,板沢 靖男編。「魚類生理学」363ー402頁)" 恒星社厚生閣(東京), 39 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ito, H. and M. Yoshimoto: "Cytoarchitecture and fiber connections of the nucleus lateralis valvulae in the carp (Cyprinus carpio)." J. Comp. Neurol.298. 1-15 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Miguel-Hidalgo, J. J., H. Ito, and J. Lara: "Distribution of calbindinlike immunoreactive structures in the optic tectum of normal and eye-enucleated cyprinid fish." Cell Tissue Res.265. 511-516 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ito, H., M. Yoshimoto, H. Uchiyama, H. Somiya, and K. Negishi: "Changes in retinal projections and ganglion cell morphology after unilateral enucleation in carp." Brain, Behav and Evol.(1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Somiya, H., M. Yoshimoto and H. Ito: "Cytoarchitecture and fiber connections of the Edinger-Westphal nucleus in the filefish." Proc. R. Soc. Lond. B.(1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yoshimoto, M. and H. Ito: "Fiber connections of the nucleus pretectalis superficialis pars magnocellularis (PSm) and tecto-PSm neurons in carp."

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ito, H. and M. Yoshimoto: "Synaptic distribution on neurons of the nucleus corticalis in a cichlid fish (Tilapia nilotica)."

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Uchiyama, H. and H. Ito: "Target cells for the isthmo-optic projection in the Japanese quail." Neuroscience Res.Suppl., 16. 124 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ito, H., M. Yoshimoto, and H. Uchiyama: "Synaptic distribution upon neurons of the nucleus corticalis." Nearoscience Res.Suppl., 16. 124 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kobayashi, S., R. Kishida, R. C. Goris, M. Yoshimoto, H. Ito: "Distribution of visual and infrared fibers in the tectum opticum of a python, Python requis : An HRP study." Neuroscience Res.Suppl. 16. 124 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ito,H.and M.Yoshimoto: "Cytoarchitecture and fiber connections of the nucleus lateralis valvulae in the carp (Cyprinus carpio)." J.Comp.Neurol.298. 1-15 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 吉本 正美、広田 伸樹、伊藤 博信、宗宮 弘明: "テラピアの三叉神経系。" 解剖学雑誌(抄録). 65. 311 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Ito,H.,M.Yoshimoto,H.Uchiyama,H.Somiya,and K.Negishi: "Changes in retinal projections and ganglion cell morphology after unilateral enucleation in carp." Brain,Behav.Evol.

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshimoto,M.and H.Ito: "Fiber connections of the nucleus pretectalis superficialis pars magnocellularis (PSm) and tectoーPSm neurons in carp."

    • Related Report
      1990 Annual Research Report
  • [Publications] Kishida,R.,S.Kobayashi,R.C.Goris,M.Yoshimoto,and H.Ito: "Laminar distribution of visual and infrared fibers in the optic tectum of the python,Python regius."

    • Related Report
      1990 Annual Research Report
  • [Publications] Ito,H.and M.Yoshimoto: "Synaptic distribution on neurons of the nucleus corticalis in the cichlid fish (Tilapia nilotica)."

    • Related Report
      1990 Annual Research Report
  • [Publications] 羽生 功、板沢 靖男編,伊藤 博信、吉本 正美: "中枢神経「魚類生理学」" 恒星社厚生閣,

    • Related Report
      1990 Annual Research Report
  • [Publications] 伊藤 博信: "脳の進化(佐藤昌康編。「ブレインサイエンスIII」137ー156頁)" 朝倉書店, 19 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Hironobu Ito and Masami Yoshimoto: "Cytoarchitecture and fiber connections of the nucleus lateralis valvulae in the carp(Cyprinus carpio)." Journal of Comparative Neurology. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 吉本正美、徐玉東、広田伸樹、伊藤博信: "テラピア(Tilapia nilotica,Cichlidae,Teleostei)の視覚系(1):網膜からの一次投射領域と網膜への投射ニュ-ロンについて" 解剖学雑誌(抄録). (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 伊藤博信、吉本正美、徐玉東、広田伸樹: "テラピア(Tilapia nilotica,Cichlidae,Teleostei)の視覚系(2):終脳への上行路について" 解剖学雑誌(抄録). (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 伊藤博信、吉本正美、広田伸樹、宗宮弘明: "コイ目とスズキ目の視蓋前域の核PSmの相同性" 解剖学雑誌(抄録). (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 吉本正美、広田伸樹、伊藤博信、宗宮弘明: "テラピアの三叉神経系" 解剖学雑誌(抄録). (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Hironobu Ito and Masami Yoshimoto: "Synaptic distribution upon neurons of the nucleus corticalis in the cichlid fish(Tilapia nilotica)." Journal of Comparative Neurology.

    • Related Report
      1989 Annual Research Report
  • [Publications] 伊藤博信、吉本正美: "魚類生理学(羽生功、板沢靖男編)" 恒星社厚生閣, (1990)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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