Estimation of neuromagnetic source location in the cortical region using MR images

Author

Mino, Katsyuki ; Niki, N. ; Nakasato, N. ; Yoshimoto, Takamichi

Author_Institution

Dept. of Opt. Sci., Tokushima Univ.

Volume

2

fYear

1997

fDate

26-29 Oct 1997

Firstpage

531

Abstract

We present an estimation for location of the neuromagnetic source in the cortical region using MR images. Magnetic fields of the brain are due to neural activity. As there are many neurons on the cortex, we regard it as a prime candidate for source location. The cortex is extracted from MR images. We assume that the points on the extracted cortex are current dipoles and all the acquired points are considered as candidate sources. We then perform the estimation on the extracted cortex by means of the MUltiple SIgnal Classification (MUSIC) method. We apply this algorithm to real human brain data

Keywords

auditory evoked potentials; biomedical NMR; brain; feature extraction; magnetic fields; medical image processing; parameter estimation; MR images; MUSIC method; auditory evoked magnetic field; brain; cortical region; current dipoles; extracted cortex; head model; magnetic fields; multiple signal classification; neural activity; neuromagnetic source location estimation; neurons; Displays; Encyclopedias; Finite impulse response filter; Navigation; Resumes; Spatial databases; Terminology; Video sequences; Web sites;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1997. Proceedings., International Conference on

Conference_Location

Santa Barbara, CA

Print_ISBN

0-8186-8183-7

Type

conf

DOI

10.1109/ICIP.1997.635641

Filename

635641