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SUPPRESSION OF GLOBAL ACTIVITY DURING MULTI-CHANNEL ELECTROPHYSIOLOGY MAPPING USING A WHITENING FILTER

  • US 20130345583A1
  • Filed: 06/20/2013
  • Published: 12/26/2013
  • Est. Priority Date: 06/20/2012
  • Status: Abandoned Application
First Claim
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1. A method for reconstructing electrical activity propagation along an electrode array within a cardiac chamber, the method comprising:

  • sampling signals from the electrode array;

    plotting the signals in multi-dimensional space with each axis corresponding to a channel in the electrode array;

    decomposing a covariance matrix of the plotted signals to characterize the spread of a data cloud of the signals in the multi-dimensional space; and

    decorrelating the data cloud to suppress excursions along correlated directions (global activation) and enhance excursions along each axis (local activation).

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