Biomag 96 pp 892-895 | Cite as

Separation of Overlapping Sources Induced by Mixed Stimulations Using 3-Dimensional MEG Mappings

  • Y. Uchikawa
  • K. Kobayashi
  • K. Sakawa
  • M. Kotani
Conference paper


There is a problem of separating multi-sources overlapping in time when many distinct areas of the cortex are active. Several methods for evaluating source localization from spatio-temporal MEG data have been reported[1],[2],[3],[4]. Almost all SQUID magnetometers for MEG study are for measuring magnetic field perpendicular to the scalp. There is a limitation in spatial resolution, using flux-detection coils with finite radius in regular devices, to separate multi-sources [5]. To get more accurate information about source configuration, we have proposed a new 3-D measurement of MEG, namely vector magnetoencephalogram [6].




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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • Y. Uchikawa
    • 1
  • K. Kobayashi
    • 1
  • K. Sakawa
    • 1
  • M. Kotani
    • 2
  1. 1.Faculty of Science and EngineeringTokyo Denki UniversitySaitamaJapan
  2. 2.Faculty of EngineeringTokyo Denki UniversityChiyodaku, TokyoJapan

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