IEEJ Transactions on Electronics, Information and Systems
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
<Biomedical Engineering>
Inverse Problem Analysis of Source Current Presumption in Magnetoencephalography using Finite-Element Kalman-Filter Method
Ai InoueYasumitsu MiyazakiNobuo Goto
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2004 Volume 124 Issue 2 Pages 436-445

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Abstract
Magnetoencephalography(MEG) measures the magnetic field generated by the activity current within the brain accompanying excitement of a nerve cell on the surface of the head. In this research, order analysis and its reverse analysis is performed supposing a suitable head model. The order analysis applied the finite element method. For inverse analysis, it is formulized using finite element method-Kalman filter algorithm . In reverse analysis with a Kalman filter, presumption of single dipole was able to be performed with sufficient accuracy. Moreover, analysis for two sources of current was also performed.
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© 2004 by the Institute of Electrical Engineers of Japan
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