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2010 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  九州大学, 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 / 近赤外分光計測 / 経頭蓋直流電気刺激
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、経頭蓋磁気刺激を与えた運動野に与えた際のアルファ帯域成分脳波、デルタ波のパワーの刺激前後の変化を調べた。その結果、デルタ波に関しては大きな変化が見られなかったが、アルファ波においてパワーの現象がみられた。このことは、反復経頭蓋磁気刺激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、1~2ミリアンペアの弱い直流経頭蓋電気刺激を運動野に与えた際の体性感覚誘発電位およびその高周波成分であるHFOの刺激前後の変化を調べた結果、その影響は電気刺激のアノード刺激とカソード刺激で反転することがわかった。すなわち、神経興奮特性を変化させる経頭蓋磁気刺激、あるいは経頭蓋電気刺激をBCIとうまく組み合わせることにより効率のよいBCIの実現が可能である。さらに、被験者に対する非拘束計測を実現するため、無線脳波計測および無線近赤外計測を用いて脳情報を計測するシステムを構築した。このシステムを用いて、意識がほとんどない重度心身障害児に対して、脳波と近赤外計測を用いて、呼びかけを行ったときの反応の計測を行った。その結果、名前を呼んだときや音楽を聴いたときに、聴覚野での酸素化ヘモグロビンの増加を観測することができ、意識レベルが非常に低い患者の認知状態をモニタリングすることが可能であることを示すことができた。

  • Research Products

    (20 results)

All 2010 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (9 results) Remarks (1 results)

  • [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

      Volume: 107 Pages: 09B320-09B320-3

    • Peer Reviewed
  • [Journal Article] Efficiency test of filtering methods for the removal of transcranial magnetic stimulation artifacts on human electroencephalography with artificially transcranial magnetic stimulation-corrupted signals2010

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

      Journal of Applied Physics

      Volume: 107 Pages: 09B305-09B305-3

    • Peer Reviewed
  • [Journal Article] Monitoring system of neuronal activity and moving activity without restraintusing wireless EEG, NIRS and accelerometer2010

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

      Proceedings of 2010 IEEE EMBS Conference on Biomedical Engineering and Sciences

      Pages: 481-484

    • Peer Reviewed
  • [Journal Article] Effects of stimulus parameters and tissue inhomogeneity on nerve excitation processes in magnetic stimulation of the brain2010

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

      Proceedings of IEEE Region 10 Conference, TENCON 2010

      Pages: 355-358

    • Peer Reviewed
  • [Journal Article] The effect of TMS to supramarginal gyrus on event-related potential P3002010

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

      Proceedings of IEEE Region 10 Conference, TENCON 2010

      Pages: 1757-1760

    • Peer Reviewed
  • [Journal Article] The long-lasting effect caused by direct current for somatosensory evoked potentials and high frequency oscillations2010

    • Author(s)
      D.Nomura, et al.
    • Journal Title

      Proceedings of IEEE Region 10 Conference, TENCON 2010

      Pages: 369-372

    • Peer Reviewed
  • [Journal Article] Time change of perceptual reversal of ambiguous figures by rTMS2010

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

      Proceedings of 32th Annual International IEEE EMBS Conference

      Pages: 6579-6582

    • Peer Reviewed
  • [Journal Article] Measurement of EEG during walking using wireless transmitting EEG2010

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

      Proceedings of The 3^<rd> Biomedical Engineering International conference

      Pages: 151-153

    • Peer Reviewed
  • [Journal Article] Long-term changes of high frequency components caused by direct current stimulation over somatosensory cortex2010

    • Author(s)
      D.Nomura, et.al
    • Journal Title

      Proceedings of The 3rd Biomedical Engineering International conference

      Pages: 192-195

    • Peer Reviewed
  • [Journal Article] Non-restraint measurement of brain activity of the child with mental retardation using wires EEG and wires NIRS2010

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

      Proceedings of The 3rd Biomedical Engineering International conference

      Pages: 222-224

    • Peer Reviewed
  • [Presentation] Monitoring system of neuronal activity and moving activity without restraint using wireless EEG, NIRS and accelerometer2010

    • Author(s)
      K.Iramina, et al.
    • Organizer
      2010 IEEE EMBS Conference on Biomedical Engineering and Sciences
    • Place of Presentation
      Kuala Lumpur, Malaysia
    • Year and Date
      2010-12-01
  • [Presentation] Effects of stimulus parameters and tissue inhomogeneity on nerve excitation processes in magnetic stimulation of the brain2010

    • Author(s)
      K.Nojima, et al.
    • Organizer
      IEEE Region 10 Conference, TENCON 2010
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2010-11-22
  • [Presentation] The effect of TMS to supramarginal gyrus on event-related potential P3002010

    • Author(s)
      A.Matsunaga, et al.
    • Organizer
      IEEE Region 10 Conference, TENCON 2010
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2010-11-22
  • [Presentation] The long-lasting effect caused by direct current for somatosensory evoked potentials and high frequency oscillations2010

    • Author(s)
      D.Nojima, et al.
    • Organizer
      IEEE Region 10 Conference, TENCON 2010
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2010-11-22
  • [Presentation] Measurement and Control of Human Brain Dynamics-Towards Applying BCI Technology-2010

    • Author(s)
      K.Iramina
    • Organizer
      The 6th Joint Workshop on Machine Perception and Robotics
    • Place of Presentation
      Fukuoka, Japan(Keynote speech)
    • Year and Date
      2010-10-08
  • [Presentation] Time change of perceptual reversal of ambiguous figures by rTMS2010

    • Author(s)
      K.Nojima, et al.
    • Organizer
      32th Annual International IEEE EMBS Conference
    • Place of Presentation
      Buenos Aires, Argentina
    • Year and Date
      2010-09-04
  • [Presentation] Non-restraint measurement of brain activity of the child with mental retardation using wires EEG and wires NIRS2010

    • Author(s)
      K.Matsuda, et al.
    • Organizer
      The 3rd Biomedical Engineering International Conference
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2010-08-27
  • [Presentation] Long-term changes of high frequency components caused by direct current stimulation over somatosensory cortex2010

    • Author(s)
      D.Nomura, et al.
    • Organizer
      The 3^<rd> Biomedical Engineering International Conference
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2010-08-27
  • [Presentation] Measurement of EEG during walking using wireless transmitting EEG2010

    • Author(s)
      K.Koga, et al.
    • Organizer
      The 3rd Biomedical Engineering International Conference
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2010-08-27
  • [Remarks]

    • URL

      http://hyoka.ofc.kyushu-u.ac.jp/search/details/K002734/research.html

URL: 

Published: 2012-07-19   Modified: 2018-02-22  

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