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2009 Fiscal Year Annual Research Report

リアルタイムコミュニケーション可能なアクティブBCIシステムの研究

Research Project

Project/Area Number 21300168
Research InstitutionKyushu University

Principal Investigator

伊良皆 啓治  Kyushu University, 大学院・システム情報科学研究院, 教授 (20211758)

Co-Investigator(Kenkyū-buntansha) 片山 喜規  九州大学, 大学院・システム情報科学研究院, 助教 (00214338)
早見 武人  岡山大学, 大学院・自然科学研究科, 講師 (60364113)
Keywordsブレインコンピュータインターフェイス / 脳波 / 経頭蓋磁気刺激 / 事象関連脱同期 / 事象関連同期
Research Abstract

本研究は経頭蓋磁気刺激や経頭蓋電気刺激を用いて脳神経の興奮特性を変化を引き出し、それにより脳波の情報を読み取るリアルタイムBCI(Brain Computer interface)を目指している。まず、経頭蓋磁気刺激時の神経興奮特性の変化を調べるため、心理物理実験で用いられる多義図形の知覚交替における知覚交替時間に与える影響を調べた。その結果、右頭頂小葉に刺激を1Hz240回与えた場合には、視覚交替の時間が優位に長くなり、1Hz 60回、および0.25Hz 60回では、短くなり、刺激の回数によって変化した。このことは、反復経頭蓋磁気刺激の刺激回数が神経の興奮特性を変化させることを示唆するものである。また、経頭蓋磁気刺激時の脳波計測に関して、磁気刺激によるアーチファクトが、大きな問題となっているが、このアーチファクトを等価回路モデルにより表し、アーチファクト除去に有効であることを示した。BCIで重要な技術はヒトの思考と相関が高い脳波特徴の発見とその特徴を抽出する解析手法であるが、本研究では、事象関連同期、事象関連脱同期におけるevoked成分とinduced成分の時間的特徴を利用することを考え、この2つの成分を分離する解析手法の提案を行い、その有用性を検討した結果、evoked成分とinduced成分を明瞭に抽出することができ、事象関連同期、事象関連脱同期の時間的特徴を捉えることに有用であることがわかった。さらに、被験者に対する非拘束計測を実現するため、無線脳波計測と無線近赤外計測による脳情報を計測するシステムを構築した。

  • Research Products

    (26 results)

All 2010 2009

All Journal Article (14 results) (of which Peer Reviewed: 14 results) Presentation (12 results)

  • [Journal Article] Efficiency test of filtering methods for the removal of TMS artifacts on human electroencephalography with artificially TMS2010

    • Author(s)
      N.Zilber
    • Journal Title

      Journal of Applied Physics 107(in press)

    • Peer Reviewed
  • [Journal Article] Effect of the stimulus frequency and pulse number of rTMS on the inter-reversal time of perceptual reversal on the right SPL2010

    • Author(s)
      K.Nojima, et al.
    • Journal Title

      Journal of Applied Physics 107(in press)

    • Peer Reviewed
  • [Journal Article] Toward detection of transient changes in magnetic resonance signal intensity arising from neuronal electrical activities2009

    • Author(s)
      K.Iramina
    • Journal Title

      International Journal of Applied Biomedical Engineering 2

      Pages: 1-8

    • Peer Reviewed
  • [Journal Article] Equivalent Circuit Simulation of the Induced Artifacts Resulted From Transcranial Magnetic Stimulation on Human Electroencephalography2009

    • Author(s)
      Y.Katayama, et al.
    • Journal Title

      IEEE Transactions on Magnetics 45

      Pages: 4833-4836

    • Peer Reviewed
  • [Journal Article] Effects of Coil Parameters on the Stimulated Area by Transcranial Magnetic Stimulation2009

    • Author(s)
      S.Tsuyama, et al.
    • Journal Title

      IEEE Transactions on Magnetics 45

      Pages: 4845-4848

    • Peer Reviewed
  • [Journal Article] Measurements of evoked electroencephalograph by transcranial magnetic stimulation applied to motor cortex and posterior parietal cortex2009

    • Author(s)
      M.Iwahashi, et al.
    • Journal Title

      Journal of Applied Physics 105

      Pages: 07B321

    • Peer Reviewed
  • [Journal Article] Effects of stimulus parameters and tissue inhomogeneity on nerve excitation processes in magnetic stimulation of the brain2009

    • Author(s)
      A.Hyodo, et al.
    • Journal Title

      Journal of Applied Physics 105

      Pages: 07B304

    • Peer Reviewed
  • [Journal Article] Disturbance of visual search by stimulating to posterior parietal cortex in the brain using transcranial magnetic stimulation2009

    • Author(s)
      K.Iramina, et al.
    • Journal Title

      Journal of Applied Physics 105

      Pages: 07B302

    • Peer Reviewed
  • [Journal Article] Detection of a diabetic sural nerve from the magnetic field after electric stimulation2009

    • Author(s)
      T.Hayami, et al.
    • Journal Title

      Journal of Applied Physics 105

      Pages: 07B315

    • Peer Reviewed
  • [Journal Article] Effect of Transcranial Magnetic Stimulation on P300 of Event-Related Potential2009

    • Author(s)
      M.Iwahashi, et al.
    • Journal Title

      Proceedings of 31th Annual International IEEE EMBS Conference

      Pages: 1359-1362

    • Peer Reviewed
  • [Journal Article] Influence of Coil Current Configuration in Magnetic Stimulation of a Nerve Fiber in Inhomogeneous and Anisotropic Conducting Media2009

    • Author(s)
      A.Hyodo, et al.
    • Journal Title

      Proceedings of 31th Annual International IEEE EMBS Conference

      Pages: 6501-6503

    • Peer Reviewed
  • [Journal Article] Measurement of brain activity in children without restraint using wireless EEG2009

    • Author(s)
      S.Fujiyama, et al
    • Journal Title

      Proceedings of the 18th International Congress on Brain Electromagnetic Topography

      Pages: 195-198

    • Peer Reviewed
  • [Journal Article] Analysis of evoked response and induced response in alpha wave and gamma wave during visual attention2009

    • Author(s)
      T.Matsunaga, et al.
    • Journal Title

      Proceedings of the 18th International Congress on Brain Electromagnetic Topography

      Pages: 23-26

    • Peer Reviewed
  • [Journal Article] Suppressive phenomenon in the higher-order functional regions2009

    • Author(s)
      M.XU, et al.
    • Journal Title

      Proceedings of the 18th International Congress on Brain Electromagnetic Topography

      Pages: 31-34

    • Peer Reviewed
  • [Presentation] Effect of the stimulus frequency and pulse number of rTMS on the inter-reversal time of perceptual reversal on the right SPL2010

    • Author(s)
      K.Nojima, et al.
    • Organizer
      11th Joint MMM-Intermag Conference
    • Place of Presentation
      Washington, DC, USA
    • Year and Date
      2010-01-22
  • [Presentation] Efficiency test of filtering methods for the removal of TMS artifacts on human electroencephalography with artificially TMS2010

    • Author(s)
      N.Zilber, et al.
    • Organizer
      11th Joint MMM-Intermag Conference
    • Place of Presentation
      Washington, DC, USA
    • Year and Date
      2010-01-22
  • [Presentation] Analysis of evoked response and induced response in alpha wave and gamma wave during visual attention2009

    • Author(s)
      T.Matsunaga, et al.
    • Organizer
      18th International Congress on Brain Electromagnetic Topography
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-10-01
  • [Presentation] Suppressive phenomenon in the higher-order functional regions : An EEG study with paired stimulus paradigm2009

    • Author(s)
      M.Xu, et al.
    • Organizer
      18th International Congress on Brain Electromagnetic Topography
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-10-01
  • [Presentation] Measurement of brain activity in children without restraint using wireless EEG2009

    • Author(s)
      S.Fujiyama, et al.
    • Organizer
      18th International Congress on Brain Electromagnetic Topography
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-09-30
  • [Presentation] Numeric calculation of the eddy current distributions and the stimulated area by transcranial magnetic stimulation2009

    • Author(s)
      S.Tsuyama, et al.
    • Organizer
      18th International Congress on Brain Electromagnetic Topography
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-09-30
  • [Presentation] Inhibition of the Neural Activity by Paired Stimulation in Somatosensory Evoked Potentials and High Frequency Oscillations2009

    • Author(s)
      D.Nomura, et al.
    • Organizer
      11th International Congress of IUPESM World Congress
    • Place of Presentation
      Munich, Germany
    • Year and Date
      2009-09-09
  • [Presentation] Monitoring of brain activity in children without restraint using wireless EEG and moving sensor2009

    • Author(s)
      S.Fujiyama, et al.
    • Organizer
      11th International Congress of IUPESM World Congress
    • Place of Presentation
      Munich, Germany
    • Year and Date
      2009-09-09
  • [Presentation] Equivalent Circuit Simulation of the Induced Artifacts Resulted from TMS on EEG2009

    • Author(s)
      Y.Katayama, et al.
    • Organizer
      11th International Congress of IUPESM World Congress
    • Place of Presentation
      Munich, Germany
    • Year and Date
      2009-09-09
  • [Presentation] Effect of Transcranial Magnetic Stimulation on P300 of Event-Related Potential2009

    • Author(s)
      M.Iwahashi, et al.
    • Organizer
      31th Annual International IEEE EMBS Conference
    • Place of Presentation
      Minneapolis, USA
    • Year and Date
      2009-09-03
  • [Presentation] Influence of Coil Current Configuration in Magnetic Stimulation of a Nerve Fiber in Inhomogeneous and Anisotropic Conducting Media2009

    • Author(s)
      A.Hyodo, et al.
    • Organizer
      31th Annual International IEEE EMBS Conference
    • Place of Presentation
      Minneapolis, USA
    • Year and Date
      2009-09-03
  • [Presentation] The Understanding of Human Brain Dynamics by Transcranial Magnetic Stimulation(Keynote speech)2009

    • Author(s)
      K.Iramina
    • Organizer
      The 2nd Biomedical Engineering International Conference
    • Place of Presentation
      Phuket, Thailand
    • Year and Date
      2009-08-13

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Published: 2011-06-16   Modified: 2018-02-23  

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