#$%^&*AU2013201678B220140410.pdf#####ABSTRACT A method for mapping abnormal electrical activity, including obtaining electrical signal data from respective locations in a heart of a living subject, and automatically analyzing the signal data to identify complex fractionated electrograms (CFEs) therein. The method further includes analyzing the CFEs so as to identify reentry locations comprised in the respective locations, and displaying information derived from the identification in relation to a map of the heart.3/5 150 START 152 ASSIGN INITIAL SYSTEM PARAMETERS 154 FROM ELECTRODE SIGNAL, IDENTIFY REGIONS PRODUCING C FAEs 156 DEFINE WINDOW OF INTEREST (WOI). ANALYZE SIGNAL WITHIN WOI 158 IDENTIFY QUALIFYING PEAKS WITHIN WOI. STORE NUMBER OF PEAKS AS NOD 160 ADJUST NOD FOR NOISE DETERMINE TOTAL 162 FRACTIONATION TIME (TFT) AS TIME BETWEEN FIRST AND LAST PEAKS OF ADJUSTED NOD 1 641 DISPLAY RESULTS INCORPORATING NOD AND/OR TFT VALUES END FIG. 3