• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Exploring information carrier in nervous systems by the effect of past neuronal activities

Research Project

Project/Area Number 15K00391
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Life / Health / Medical informatics
Research InstitutionHokkaido University

Principal Investigator

Yamanobe Takanobu  北海道大学, 医学研究院, 助教 (00322800)

Co-Investigator(Renkei-kenkyūsha) Ishikawa Yasushi  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsjump-diffusion / 漸近展開 / ジャンプノイズ / 確率的非線形振動子 / ジャンプ拡散過程 / jump-diffusion過程 / 情報キャリア / 線形作用素
Outline of Final Research Achievements

In nervous systems, spikes carry information. However, the exact statistic that carriers information in nervous systems is not known. According to the theory of neural networks, the information carrier of a neural network is dependent on the output function of the elements which constitute the neural network. Moreover, neurons have noises which are modeled by jump-diffusion processes. In this study, we develop an asymptotic expansion of the transition density of a stochastic nonlinear oscillator with jump-diffusion processes to make a mathematical framework of the analysis of neuronal models.

Academic Significance and Societal Importance of the Research Achievements

神経細胞は、拡散過程で近似されるイオンチャネルノイズ、シナプス小胞の自発的放出によるジャンプノイズなどを持つ確率的な素子である。各神経細胞の特性を反映した出力関数を求めることが、情報キャリアを解明するために必要であると考えられる。神経細胞の出力関数を調べる方法を構築するため、ジャンプ-拡散過程で記述されるノイズを持つ、確率的非線形振動子の推移確率の漸近展開を計算した。この振動子は神経細胞モデルのある部分のダイナミクスを持つ。我々は、この振動子を用い、漸近展開の数学的基礎について研究した。これにより漸近展開理論の適用範囲を拡げた。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (12 results)

All 2018 2017 2016 2015 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (10 results) (of which Int'l Joint Research: 7 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] Asymptotic expansion of a nonlinear oscillator with a jump-diffusion process2018

    • Author(s)
      Yasushi Ishikawa, Takanobu Yamanobe
    • Journal Title

      Japan J. Indust. Appl. Math.

      Volume: 35 Issue: 2 Pages: 969-1004

    • DOI

      10.1007/s13160-018-0312-1

    • NAID

      210000185081

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Reduction of the dynamics of stochastic neuronal models by sparse discrete cosine transform2018

    • Author(s)
      Takanobu Yamanobe
    • Organizer
      11th FENS Forum of Neuroscience
    • Related Report
      2018 Annual Research Report
  • [Presentation] Reduction of a Markov operator representing the dynamics of stochastic neuronal model by sparse discrete cosine transform2018

    • Author(s)
      Takanobu Yamanobe
    • Organizer
      第56回日本生物物理学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 確率過程の漸近展開理論による振動子モデルの解析2017

    • Author(s)
      山野辺貴信
    • Organizer
      Perspectives of Nonlinear Phenomena in Random and Non-autonomous Dynamics
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Reduction of the dynamics of a stochastic neuronal model by using non-negative matrix factorization2017

    • Author(s)
      Takanobu Yamanobe
    • Organizer
      Neuroscience 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Input-output transformation of a neuronal oscillator2016

    • Author(s)
      T. Yamanobe
    • Organizer
      SCIS-ISIS 2016
    • Place of Presentation
      北海道・札幌市・北海学園大学
    • Year and Date
      2016-08-25
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Input-output transformation of a neuronal oscillator2016

    • Author(s)
      T. Yamanobe
    • Organizer
      SCIS-ISIS2016
    • Place of Presentation
      北海学園大学(北海道・札幌市)
    • Year and Date
      2016-08-25
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Input-output transformation of a stochastic neuron model with synaptic and ion-channel noises2016

    • Author(s)
      T. Yamanobe, Y. Ishikawa
    • Organizer
      10th FENS Forum of Neuroscience
    • Place of Presentation
      Copenhagen, Denmark
    • Year and Date
      2016-07-02
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Input-output transformation of a stochastic neuron model with synaptic and ion-channel noises2016

    • Author(s)
      T. Yamanobe, Y. Ishikawa
    • Organizer
      FENS Forum 2016
    • Place of Presentation
      Copenhagen (Denmark)
    • Year and Date
      2016-07-02
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Transient dynamics of neurons and the information carrier in nervous sytems2015

    • Author(s)
      T. Yamanobe
    • Organizer
      The 16th RIES-Hokudai International Symposium
    • Place of Presentation
      北海道大学(北海道・札幌市)
    • Year and Date
      2015-11-11
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Analysis of the dependence of spike generation on the past neuronal activity2015

    • Author(s)
      T. Yamanobe
    • Organizer
      Neuroscience 2015
    • Place of Presentation
      Chicago (USA)
    • Year and Date
      2015-10-17
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Remarks] 研究代表者の研究紹介ホームページ

    • URL

      http://takayamanobe.sakura.ne.jp/index.html

    • Related Report
      2017 Research-status Report 2016 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi