Title :
Non-uniform spatial sampling in EEG source analysis
Author :
Bénar, C.G. ; Gotman, J.
Author_Institution :
Montreal Neurological Inst., McGill Univ., Montreal, Que., Canada
Abstract :
We investigate in this paper the non-uniform sampling of EEG dipolar potentials and its impact on source analysis. We suppose some a priori knowledge on the approximate location of the dipole. We show that, in a noise-free situation, the electrode spacing needs to be around 3 cm in the region of the dipole only, whereas it can drop to 8 cm in remote regions.
Keywords :
biomedical electrodes; brain models; electroencephalography; medical signal processing; 3 cm; 8 cm; EEG dipolar potentials; EEG source analysis; a priori knowledge; dipole potential; electrode spacing; electrodiagnostics; noise-free situation; nonuniform sampling; potential on sphere; source reconstruction techniques; Bandwidth; Brain modeling; Electrodes; Electroencephalography; Epilepsy; Frequency; Magnetic heads; Nonlinear distortion; Sampling methods; Scalp;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1019090
