Fig. 6.

The impact of low-pass filtering on fractionation. Upper left: the percentage fractionated potentials (two or more deflections per potential, expressed as a percentage of total detected fibrillation potentials) of all patients. Upper right: fractionation delay time (FDT, time interval between first and last deflection) of all patients. Lower left: stacked bar-plots with the distribution of potential types of one patient. Potential type is either single (one deflection), double (two deflections), or complex (three or more deflections). Distribution is expressed as a percentage of the total detected fibrillation potentials. Lower right: stacked bar-plots of median FDT of one patient. The dotted vertical lines represent the median value of the corresponding stacked bar-plot representing low-pass filtering at 400, 200, 100, or 50 Hz. For both lower figures, the data of patient 1 was taken as a representative case for all patients