MEG source localization using invariance of noise space.
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ABSTRACT:
SUBMITTER: Zhang J
PROVIDER: S-EPMC3591341 | biostudies-literature | 2013
REPOSITORIES: biostudies-literature
Publications
MEG source localization using invariance of noise space.
Zhang Junpeng J Raij Tommi T Hämäläinen Matti M Yao Dezhong D
PloS one 20130307 3
We propose INvariance of Noise (INN) space as a novel method for source localization of magnetoencephalography (MEG) data. The method is based on the fact that modulations of source strengths across time change the energy in signal subspace but leave the noise subspace invariant. We compare INN with classical MUSIC, RAP-MUSIC, and beamformer approaches using simulated data while varying signal-to-noise ratios as well as distance and temporal correlation between two sources. We also demonstrate t ...[more]
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