Title
Generalized sidelobe canceller for magnetoencephalography arrays
Abstract
In the last decade, large arrays of sensors for magnetoencephalography (MEG) (and electroencephalography (EEG)) have become more commonplace, allowing new opportunities for the application of beamforming techniques to the joint problems of signal estimation and noise reduction. We introduce a new approach to noise cancellation, the generalized sidelobe canceller (GSC), itself an alternative to the linearly constrained minimum variance (LCMV) algorithm. The GSC framework naturally fits within the other noise reduction techniques that employ real or virtual reference arrays. Using expository human subject data with strong environmental and biological artifacts, we demonstrate a straightforward sequence of steps for practical noise filtering, applicable to any large array sensor design.
Year
DOI
Venue
2009
10.1109/ISBI.2009.5193005
ISBI
Keywords
Field
DocType
Array signal processing, magnetoencephalography, spatial filters, adaptive arrays
Noise reduction,Data modeling,Minimum-variance unbiased estimator,Computer science,Artificial intelligence,Active noise control,Beamforming,Joint problems,Pattern recognition,Filter (signal processing),Algorithm,Speech recognition,Magnetoencephalography
Conference
Volume
Citations 
PageRank 
2009
0
0.34
References 
Authors
1
6
Name
Order
Citations
PageRank
John C. Mosher117926.49
Matti Hämäläinen2911140.69
Dimitrios Pantazis346438.97
Hua Brian Hui4484.02
Richard C. Burgess535.37
Richard M Leahy61768295.29