Improved magnetoencephalography source reconstruction considering anatomical connectivity of cortical sources

Author

An, Kwang-Ok ; Im, Chang-Hwan ; Lee, Chany ; Jung, Hyun-Kyo ; Jung, Ki-Young

Author_Institution

Sch. of Electr. Eng., Seoul Nat. Univ.

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

1379

Lastpage

1382

Abstract

In this paper, an improved magnetoencephalography (MEG) source reconstruction technique considering anatomical connectivity of cortical sources is proposed. The anatomical connectivity information was taken into account by calculating three-dimensional geodesic distance between neighboring sources, and then the resultant inverse solutions were compared with those of other cases:1)Inverse estimate without connectivity information; 2)Use of Euclidean distance instead of geodesic distance. The proposed technique was applied to realistic simulations for a real brain anatomy, and the results showed that estimated sources can be smoother and more accurate by using the anatomical connectivity information

Keywords

bioelectric potentials; brain; magnetoencephalography; medical signal processing; signal reconstruction; 3D geodesic distance; Euclidean distance; Wiener estimation; anatomical connectivity; brain anatomy; cortical sources; magnetoencephalography source reconstruction; Anatomy; Brain modeling; Cerebral cortex; Covariance matrix; Electroencephalography; Euclidean distance; Image reconstruction; Inverse problems; Magnetic field measurement; Magnetoencephalography; 3-D geodesic distance; Anatomical connectivity; Wiener estimation; magnetoencephalography (MEG) source reconstruction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871635

Filename

1608472