Fig. 4

a Electrograms were randomly made isoelectric to simulate the scenario of a poor catheter contact. As the percentage of the missing electrodes increases, the algorithm success gradually decreases. b Catheter-placement error was introduced in the algorithm-recommended location for navigation. c The effect of simultaneous errors due to poor contact of electrodes and catheter displacement in the AF detection accuracy of the algorithm. The values were averaged over focal and reentry cases (simulation cases of Fig. 1a, b)