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].


Tone Burst Current Dipole Median Nerve Stimulation Source Configuration Tangential Magnetic Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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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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