Title :
EEG dipole localization bounds for head models with parameter uncertainties
Author :
Radich, Bill ; Buckley, Kevin M.
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
The Cramer-Rao bound for unbiased location estimation of multiple current dipoles is derived under the assumption of a general head model parameterized by a combination of deterministic and stochastic parameters. The expression (also applicable to MEG) thus characterizes fundamental limits on EEG localization performance due to the effects of both statistical measurement noise and model uncertainty
Keywords :
array signal processing; electroencephalography; magnetoencephalography; medical signal processing; parameter estimation; physiological models; random noise; stochastic processes; Cramer-Rao bound; EEG dipole localization bounds; MEG; deterministic parameters; head models; model uncertainty; multiple current dipoles; parameter uncertainties; sensor array; statistical measurement noise; stochastic parameters; unbiased location estimation; Brain modeling; Covariance matrix; Electroencephalography; Forward contracts; Noise measurement; Position measurement; Sensor arrays; Sensor phenomena and characterization; Stochastic processes; Uncertainty;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-1775-0
DOI :
10.1109/ICASSP.1994.389872
