Title :
Maximum-likelihood estimation of current-dipole parameters for data obtained using multichannel magnetometer
Author :
Sekihara, Kensuke ; Ogura, Yukiko ; Hotta, Masao
Author_Institution :
Hitachi Ltd., Tokyo, Japan
fDate :
6/1/1992 12:00:00 AM
Abstract :
A method of reducing the influence of external noise magnetic field on the accuracy of estimating current dipole parameters is proposed. It utilizes the spatial correlation of external noises, and is applied to data measured using a multichannel magnetometer. Computer simulation demonstrates the effectiveness of the proposed method.
Keywords :
bioelectric phenomena; biomagnetism; brain; parameter estimation; computer simulation; current-dipole parameters; external noise magnetic field; multichannel magnetometer; spatial correlation; Coils; Detectors; Humans; Magnetic field measurement; Magnetic heads; Magnetic noise; Magnetometers; Maximum likelihood estimation; Noise measurement; Noise reduction; Computer Simulation; Humans; Likelihood Functions; Magnetics; Models, Biological;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
