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Statistical Inverse Problem and its Applications to Complex Systems

Research Project

Project/Area Number 14580346
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Statistical science
Research InstitutionGifu University

Principal Investigator

KISHIDA Kuniharu  Gifu University, Faculty of Engineering, Professor, 工学部, 教授 (90115402)

Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2004: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2003: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2002: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsmagnetoencephalography / statistical inverse problems / identification of feedback system / independent component analysis / connection of brain functions / system dynamics / noises in nuclear power reactor / blind identification / 誘発磁場 / イノベーションモデル / 体性感覚野 / 正中神経繰り返し刺激 / 聴覚野 / 連関 / ゆらぎ解析 / フィードバックシステム / 体性感覚
Research Abstract

In this research statistical inverse problem on complex systems such as brain functions or engineering plants is examined by using the identification method based on feedback system theory. Since the localization of brain activities was well understood in the last century, activities of associated regions in brain are interested for understanding of higher order brain functions, i.e., language, recognition, vision activities, in the present century.
At the beginning of research, it seemed to be difficult to attack such topics for time series data of magnetoencephalography (MEG), since there are many parallel processing of activities in brain. However, repeated electrical or sound stimuli give periodical activities in brain, and they are called by the evoked magnetic field. Then, we could separate particular evoked magnetic fields from background magnetic fields of brain by using the independent component analysis based on temporal structure. One example is the auditory evoked field, and the other is the somatosensory evoked field. After selection of evoked MEG we can examine dynamics included in MEG time series data by the identification method based on feedback system theory. That is, transfer functions between observable channels were identified, and their impulse responses were obtained. They give us dynamics between regions of brains. The Gaussianity in the framework of the method was important to obtain the stationarity of time series data, since it is observed in not only MEG data but also fluctuations of neutron number of nuclear power plants.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (30 results)

All 2005 2004 2003 Other

All Journal Article (24 results) Publications (6 results)

  • [Journal Article] A New Dynamical Approach to Auditory Evoked Magnetic Field by Blind Identification2005

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Neurology and Clinical Neurophysiology (to appear in the online journal)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Blind Identification of Brain Dynamics in MEG2005

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceedings of IEEE International Symposium on Circuits and Systems (ISCAS2005). (Accepted)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A New Dynamical Approach to Auditory Evoked Magnetic Field by Blind Identification2005

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      online journal Neurology and Clinical Neurophysiology (to appear)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A New Dynamical Approach to Auditory Evoked Magnetic Field by Blind Identification2005

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      the online journal Neurology and Clinical Neurophysiology (印刷中)(to appear)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Blind Identification of Brain Dynamics in MEG2005

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceedings of IEEE International Symposium on Circuits and Systems(ISCAS2005) (印刷中)(Accepted)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effective Elimination of Power Supply Noise from MEG Data using Blind Source Separation2004

    • Author(s)
      Hidekazu Fukai
    • Journal Title

      Proceedings of the 2^<nd> IASTED International Conference on Biomedical Engineering

      Pages: 267-270

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A New Dynamical Approach to Auditory Evoked Magnetic Field by Blind Identification2004

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceedings of the 14^<th> International Conference on Biomagnetism

      Pages: 513-514

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effective Extraction of High-frequency Oscillations by Blind Source Separation Method2004

    • Author(s)
      Hidekazu Fukai
    • Journal Title

      Proceedings of the 8^<th> International Evoked Potentials Symposium (IEPS2004)

      Pages: 352-352

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effective Elimination of Power Supply Noise from MEG Data using Blind Source Separation2004

    • Author(s)
      Hidekazu Fukai
    • Journal Title

      Proceedings of the 2^<nd> LASTED International Conference on Biomedical Engineering

      Pages: 267-270

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A New Dynamical Approach to Auditory Evoked Magnetic Field by Blind Identification2004

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceedings of the 14^<th> International Conference on Biomagnetism (Biomag2004)

      Pages: 513-514

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effective Extraction of High-frequency Oscillations by Blind Source Separation Method2004

    • Author(s)
      Hidekazu Fukai
    • Journal Title

      Proceedings of the 8^<th> International Evoked Potentials Symposium

      Pages: 352-352

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A New Dynamical Approach to Auditory Evoked Magnetic Field by Blind Identification2004

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceedings of the 14^<th> International Conference on Biomagnetism(Biomag2004)

      Pages: 513-514

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effective Extraction of High-frequency Oscillations by Blind Source Separation Method2004

    • Author(s)
      Hidekazu Fukai
    • Journal Title

      Proceedings of the 8^<th> International Evoked Potentials Symposium(IEPS2004)

      Pages: 352-352

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A New Approach to Blind System Identification in MEG Data2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E86-A

      Pages: 611-619

    • NAID

      110003212635

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Blind Identification of SEF Dynamics from MEG Data by Using Decorrelation Method of ICA2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceeding of 4^<th> International Symposium on Independent Component Analysis and Blind Signal Separation

      Pages: 185-190

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Identification of Transfer Functions and Statistical Inverse Problems2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Progress in Nuclear Energy

      Pages: 297-303

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Identification Method based on Feedback System Theory and Scalar Times Transformations2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceedings of the 34th ISCIE International Symposium on Stochastic Systems Theory and Its Applications

      Pages: 201-206

    • NAID

      130007376962

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Statistical Inverse Problem in Feedback System and Diagnosis of Feedback Paths2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      ISM Report on Research and Education 17

      Pages: 338-339

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A New Approach to Blind System Identification of in MEG Data2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      IEICE Transactions on Fundamentals Electronics, Communications and Computer Sciences Vol.E86-A, no.3

      Pages: 611-619

    • NAID

      110003212635

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Blind Identification of SEF Dynamics from MEG Data by Using Decorrelation Method of ICA2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceeding of the Fourth International Symposium on Independent Component Analysis and Blind Signal Separation

      Pages: 185-190

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Identification of Transfer Functions and Statistical Inverse Problems2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Progress in Nuclear Energy Vol.43, no.1-4

      Pages: 297-303

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Identification Method based on Feedback System Theory and Scalar Times Transformations2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceedings of the 34th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS02)

      Pages: 201-206

    • NAID

      130007376962

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Statistical Inverse Problem in Feedback System and Diagnosis of Feedback Paths2003

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      ISM Report on Research and Education No.17

      Pages: 338-339

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Blind Identification of Brain Dynamics in MEG

    • Author(s)
      Kuniharu Kishida
    • Journal Title

      Proceedings of IEEE International Symposium on Circuits and Systems (ISCAS2005). (Accepted)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] Kuniharu Kishida: "Identification of Transfer Functions and Statistical Inverse Problems"Progress in Nuclear Energy. 43. 297-303 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kuniharu Kishida: "Blind Identification of SEF Dynamics from MEG Data by Using Decorrelation Method of ICA"Proceedings of the 4th International Symposium on Independent Component Analysis and Blind Signal Separation. 185-190 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kuniharu Kishida: "Identification Method based on Feedback System Theory and Scalar Times Transformations"Proceedings of the 34th ISCIE International Symposium on Stochastic Systems Theory and Its Applications. 201-206 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Hidekazu Fukai: "Effective Elimination of Power Supply Noise from MEG Data using Blind Source Separation"Proceedings of the 2^<nd> IASTED International Conference on Biomedical Engineering. (in press). 267-270 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kuniharu Kishida: "A New Approach to Blind System Identification in MEG Data"IEICE Trans. Fundamentals. E86-A・3. 611-619 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kuniharu Kishida: "Blind Identification of SEF Dynamics from MEG Data by Using Decorrelation Method of ICA"Proc. 4th International Symp. Independent Component Analysis and Blind Signal Senaration. (in press).

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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