Numerical aspects of spatio-temporal current density reconstruction from EEG-/MEG-data

Author

Schmitt, Uwe ; Louis, Alfred K. ; Darvas, Felix ; Buchner, Helmut ; Fuchs, Manfred

Author_Institution

Inst. of Appl. Math., Saarlandes Univ., Saarbrucken, Germany

Volume

20

Issue

4

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

314

Lastpage

324

Abstract

The determination of the sources of electric activity inside the brain from electric and magnetic measurements on the surface of the head is known to be an ill-posed problem. In this paper, a new algorithm which takes temporal a priori information modeled by the smooth activation model into account is described and compared with existing algorithms such as Tikhonov-Phillips.

Keywords

brain models; current density; electroencephalography; inverse problems; magnetoencephalography; medical signal processing; EEG-data; MEG-data; Tikhonov-Phillips algorithm; algorithm; brain; electric activity sources; electric measurements; head surface; ill-posed problem; magnetic measurements; numerical aspects; smooth activation model; spatio-temporal current density reconstruction; temporal a priori information; Brain modeling; Current density; Electroencephalography; Image reconstruction; Magnetic heads; Magnetoencephalography; Mathematics; Nervous system; Positron emission tomography; Spatial resolution; Algorithms; Brain Mapping; Electroencephalography; Humans; Magnetoencephalography; Models, Theoretical; Signal Processing, Computer-Assisted;

fLanguage

English

Journal_Title

Medical Imaging, IEEE Transactions on

Publisher

ieee

ISSN

0278-0062

Type

jour

DOI

10.1109/42.921480

Filename

921480