Title :
Blind separation and localization of dipole sources of MEG
Author :
Chan, Francis H Y ; Chang, Chunqi ; Xu, Weichao ; Lam, F.K. ; Kwok, Paul
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
We present a new approach to MEG inverse problem by modeling it into a standard blind source separation problem. In our approach, dipole sources and gain matrix are estimated without any knowledge about the head geometry and conductivity. Given the head model, we can compute dipole locations further. Our matrix pencil method developed before is suitable for this task and is applied in the simulation. Simulation results are presented
Keywords :
digital simulation; inverse problems; magnetoencephalography; medical diagnostic computing; medical signal processing; physiological models; blind localization; dipole locations; dipole sources; gain matrix; head conductivity; head geometry; head model; magnetoencephalographic inverse problem; matrix pencil method; modeling; simulation; standard blind source separation problem; Blind source separation; Brain modeling; Gain measurement; Inverse problems; Magnetic field measurement; Magnetic heads; Noise measurement; Position measurement; Sensor arrays; Symmetric matrices;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.804183
