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MEG/EEG hybrid method for source localization of
BibTeX
@MISC{Radial_meg/eeghybrid,
author = {Dipole With Radial and K. Takada and K. Nomura and Y. Ono and M. Kurosawa and A. Ishiyama and N. Kasai and N. Nakasato},
title = {MEG/EEG hybrid method for source localization of},
year = {}
}
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Abstract
Introduction MEG is a useful method to know brain activities, and has a remarkable feature that the source location is estimated with high accuracy. However MEG is insensitive to a radial current dipole, because a radial dipole in a sphere makes no magnetic field outside the sphere and the shape of human head resembles a sphere. To realize more accurate localization, there is a requirement to estimate a radial current dipole or a dipole with radial component in human brain. On the other hand, EEG detects the potential at surface of scalp regardless of a dipole direction. The accuracy of source estimation by using EEG is not good comparing with that using MEG, because the human head consists of many different electric conductivity tissues such as brain, skull and scalp and it is difficult to know the electrical conductivity exactly. We developed a MEG/EEG hybrid method for source localization of a dipole with radial component [1]. There is a hypothesis that the primary somatosensory
Keyphrases
source localization meg eeg hybrid method human head radial component radial current dipole useful method dipole direction source location many different electric conductivity tissue magnetic field introduction meg brain activity accurate localization radial dipole high accuracy scalp regardless primary somatosensory source estimation remarkable feature electrical conductivity human brain
