日本応用磁気学会誌
Online ISSN : 1880-4004
Print ISSN : 0285-0192
ISSN-L : 0285-0192
論文
三次元脳磁界分布を用いた電流源分布推定への実験的検討
内川 義則小林 宏一郎榎本 和義坂和 幸蔵ムウェテ ムルアカ小谷 誠太田 浩
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ジャーナル オープンアクセス

1995 年 19 巻 3 号 p. 734-739

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To determine the possibility of discriminating multisources in the brain by using a 3-D magnetoencephalogram (MEG), measurements were made of magnetic fields produced by two and three current dipoles implanted in a spherical head model and a human cranium model. The 3-D MEG measurement was made by using a 3-D second-order gradiometer connected to three rf-SQUIDs, which can detect magnetic field components perpendicular to and tangential to the scalp. The MEG distribution perpendicular to the scalp was not helpful for estimating the location and number of sources, owing to the lack of a dipole pattern. By referring to the MEG distribution tangential to the scalp, however, two and three current sources could be clearly discriminated in both a spherical head model and a cranium model. It was found that this MEG measurement tangential to the scalp could provide information on new constrained conditions for calculation of the inverse problems with multi-sources.

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© 1995 (社)日本応用磁気学会
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