Title :
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
fDate :
4/1/2001 12:00:00 AM
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;
Journal_Title :
Medical Imaging, IEEE Transactions on
