Separation of Overlapping Sources Induced by Mixed Stimulations Using 3-Dimensional MEG Mappings
There is a problem of separating multi-sources overlapping in time when many distinct areas of the cortex are active. Several methods for evaluating source localization from spatio-temporal MEG data have been reported,,,. Almost all SQUID magnetometers for MEG study are for measuring magnetic field perpendicular to the scalp. There is a limitation in spatial resolution, using flux-detection coils with finite radius in regular devices, to separate multi-sources . To get more accurate information about source configuration, we have proposed a new 3-D measurement of MEG, namely vector magnetoencephalogram .
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