Measurement of magnetic field associated with eye movement.

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  • NOGUCHI Hirokazu
    Department of Electronic Engineering, Faculty of Engineering, Tokyo Denki University presently Toshiba Co.
  • AIHARA Kazuyuki
    Department of Electronic Engineering, Faculty of Engineering, Tokyo Denki University
  • KOTANI Makoto
    Department of Electronic Engineering, Faculty of Engineering, Tokyo Denki University

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Other Title
  • 眼球運動に伴う磁界の計測
  • ガンキュウ ウンドウ ニ トモナウ ジカイ ノ ケイソク

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A weak magnetic field associated with eye movement (Magneto-oculogram: MOG) is analysed both experimentally and theoretically in this study.<br>First, a spatial distribution of the MOG signals is experimentally measured by SQUID (Superconducting Quantum Interference Device) with a second derivative gradiometer in a magnetically shielded room.<br>Second, under the assumption that the source of the MOG signals can be approximated by one current dipole, it has been theoretically conjectured that there exists a current dipole of 200-350nA-m in the retina.

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