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2002 Fiscal Year Final Research Report Summary

Theoretical study on neural correlates of thoughts and inference

Research Project

Project/Area Number 12210001
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionHokkaido University

Principal Investigator

TSUDA Ichiro  Hokkaido University, Graduate School of Science, Division of Mathematics, Professor, 大学院理学研究科, 教授 (10207384)

Co-Investigator(Kenkyū-buntansha) NAMIKI Takao  Graduate School of Science, Division of Mathematics, Assistant, 大学院理学研究科, 助手 (40271712)
MATSUMOTO Kenji  Graduate School of Science, Division of Mathematics, Associate Professor, 大学院理学研究科, 助教授 (80183953)
IKEGAMI Takashi  The University of Tokyo, graduate school of Arts and Science, Professor, 大学院総合文化研究科, 教授 (10211715)
KAMPIS Geroge  Japan Advanced Institute of Science and Technology, Visiting Professor, 客員助教授
Project Period (FY) 2000 – 2002
KeywordsThoughts / Inferences / Chaos / Fractal / Learning experimen / Associative memories / episodic memories
Research Abstract

In order to investigate thoughts and inference processes and their neural correlates, we first clarified the difference between thoughts and memories, which is shown in the following: Thoughts are context-free, while associative memories are context-dependent; thoughts can be viewed as finding of relations, computations, and going beyond the circumstances with contradictions, that is, a kind of abduction. We inferred that episodic memories are on the intermediate stage of temporal information processings between thoughts and simple memories.
Second, we made a model for representation of inferen of prooesses by dynamical systems. ************************ ***eed chaotic itinerancy between partially synchronized states, where chaotic itinerancy indicates a process of inference.
Third, we classified inferences, and studied how to conduct an experiment with monkey on a syllogism. We concluded that we should conduct the experiment on category, for the first step. In order to interpret the experimental data, we made a mathematical tool for its analysis.

  • Research Products

    (14 results)

All 2002 2001

All Journal Article (8 results) Book (6 results)

  • [Journal Article] Hermeneutic approach to the brain : Process versus device2002

    • Author(s)
      P.Erdi
    • Journal Title

      Theoria et Historia Scientiarum VI (2)

      Pages: 307-321

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hermeneutic approach to the brain : Process versus device2002

    • Author(s)
      P.Erdi
    • Journal Title

      Theoria et Historia Scientiarum VI(2)

      Pages: 307-321

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Making sense of internal logic, In : The Sciences of Interface2001

    • Author(s)
      I.Tsuda
    • Journal Title

      Genista Verlag

      Pages: 131-135

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Cantor coding in the hippocampus2001

    • Author(s)
      I.Tsuda
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics 18(2)

      Pages: 249-258

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Toward an interpretation of dynamic neural activity in terms of chaotic dynamical systems2001

    • Author(s)
      I.Tsuda
    • Journal Title

      Behavioral and Brain Sciences 24(5)

      Pages: 793-847

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Fractal encoding in a chaotic neural network2001

    • Author(s)
      J.K.Ryeu
    • Journal Title

      Physical Review E 64

      Pages: 046202:1-6

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 'Making sense of internal logic', In : The Sciences of Interface2001

    • Author(s)
      I.Tsuda
    • Journal Title

      Genista Verlag

      Pages: 131-135

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Fractal encoding in a chaotic neural network2001

    • Author(s)
      J.K.Ryeu
    • Journal Title

      Physical Review E E, 64 046202

      Pages: 1-6

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] 複雑系脳理論-「動的脳観」による脳の理解2002

    • Author(s)
      津田一郎
    • Total Pages
      111
    • Publisher
      サイエンス社
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] ダイナミックな脳2002

    • Author(s)
      津田一郎
    • Total Pages
      178
    • Publisher
      岩波書店
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Brain theory from complex systemsa viewpoint2002

    • Author(s)
      I.Tsuda
    • Total Pages
      111
    • Publisher
      Science-sha (in Japanese)
    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] The dynamic brain2002

    • Author(s)
      I.Tsuda
    • Total Pages
      178
    • Publisher
      Iwanami publ. co. (in Japanese)
    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] Complex Systems : Chaos and Beyond - A Constructive Approach with Applications in Life Sciences2001

    • Author(s)
      I.Tsuda
    • Total Pages
      273
    • Publisher
      Springer-Verlag Berlin
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Complex Systems : Chaos and Beyond--A Constructive Approach with Applications in Life Sciences2001

    • Author(s)
      I.Tsuda
    • Total Pages
      273
    • Publisher
      Springer・Verlag Berlin
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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