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Quantitative magnetoencephalogram system and method

  • US 6,195,576 B1
  • Filed: 03/09/1998
  • Issued: 02/27/2001
  • Est. Priority Date: 03/09/1998
  • Status: Expired due to Term
First Claim
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1. The method of detecting and analyzing magnetic fields on the scalp of the subject arising from the subject'"'"'s brain electromagnetic activity, by:

  • (a) detecting and amplifying the magnetic fields using a plurality of magnetic field detectors positioned adjacent selected areas of the subject'"'"'s scalp to produce amplified signals in a plurality of channels;

    (b) converting the amplified signals into digital MEG (Magnetoencephalogram) data;

    (c) automatically comparing, in a computer, the digital MEG (Magnetoencephalogram) data with a normative QEEG (Quantitative Electroencephalogram) reference database of features simultaneously or previously collected from normal subjects, the comparison being on the basis of the same features obtained at the same location of the field detectors, or a computed multiple regression equation, canonical correlation, or covariance of multiple MEG detectors for the subject, as the EEG electrodes positioned on the normal subjects which generated the QEEG database, to obtain a set of QMEG (Quantitative Magnetoencephalogram) variables.

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