脳磁図用リアルタイム頭部位置観測装置の開発  [in Japanese] Real-time Head Localization System for Magnetoencephalography  [in Japanese]

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Author(s)

    • 小山 大介 Oyama D.
    • 金沢工業大学先端電子技術応用研究所|金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology|Applied Electronics Laboratory, Kanazawa Institute of Technology
    • 足立 善昭 Adachi Y.
    • 金沢工業大学先端電子技術応用研究所|金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology|Applied Electronics Laboratory, Kanazawa Institute of Technology
    • 樋口 正法 [他] Higuchi M.
    • 金沢工業大学先端電子技術応用研究所|金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology|Applied Electronics Laboratory, Kanazawa Institute of Technology
    • 河合 淳 Kawai J.
    • 金沢工業大学先端電子技術応用研究所|金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology|Applied Electronics Laboratory, Kanazawa Institute of Technology
    • 宮本 政和 Miyamoto M.
    • 金沢工業大学先端電子技術応用研究所|金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology|Applied Electronics Laboratory, Kanazawa Institute of Technology
    • 小林 宏一郎 Kobayashi K.
    • 岩手大学工学部|岩手大学工学部 Faculty of Engineering, Iwate University|Faculty of Engineering, Iwate University
    • 上原 弦 Uehara G.
    • 金沢工業大学先端電子技術応用研究所|金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology|Applied Electronics Laboratory, Kanazawa Institute of Technology

Abstract

  Knowing the precise positions of a subject and sensors is important to localize the signal source in biomagnetic measurements, such as magnetoencephalography (MEG). Generally, the position of the subject is measured using magnetic marker coils attached to his/her head. The position of the coils should be monitored simultaneously with the MEG measurements. However, the positioning is usually performed before and/or after MEG measurements in order to avoid a crosstalk from marker signals to brain signals. We have developed a simultaneous observation system of MEG signal and marker coil positions using a higher-frequency current driver circuit and multi integrator flux-locked loop circuits. The localization of marker coil was done every 1 s and its accuracy was about 6 mm. We demonstrated the real-time head localization during MEG measurement, and the source position of brain signal could be compensated even if the subject head has moved during the MEG measurement.

Journal

  • Journal of the Magnetics Society of Japan

    Journal of the Magnetics Society of Japan 36(6), 345-351, 2012

    The Magnetics Society of Japan

Codes

  • NII Article ID (NAID)
    130002112222
  • NII NACSIS-CAT ID (NCID)
    AA12297999
  • Text Lang
    JPN
  • ISSN
    1882-2924
  • NDL Article ID
    024072186
  • NDL Call No.
    Z15-398
  • Data Source
    NDL  J-STAGE 
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