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n. Abbr. MEG
A diagnostic imaging technique that detects and records magnetic fields produced by electrical activity in the brain.

mag·ne′to·en·ceph′a·lo·graph′ic (-ə-lə-grăf′ĭk, -ə-lō-) adj.
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Lempel-Ziv complexity applied in brain magnetoencephalograms has been reported to have good accuracy in identifying Alzheimer disease (18) and for the identification of sedation in rats (19).