Fig. 5.

The impact of low-pass filtering on detection of fibrillation potentials and deflection amplitude. Upper left: the number of detected fibrillation potentials (expressed as a percentage of maximal number of fibrillation potentials within the patient) of all patients. Upper right: overall median deflection amplitude of all patients. Lower left: stacked bar-plots of median primary deflection amplitude of one patient. Lower right: stacked bar-plots of median secondary deflection amplitude of one patient. For both lower figures, the data of patient 1 was taken as a representative case for all patients. 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