Cardiac ElectrophysiologyElectrophysiologic Techniques, CardiacAccessory Atrioventricular BundleElectrophysiological ProcessesArrhythmias, CardiacMagnetic Resonance Imaging, InterventionalElectrophysiologyCatheter AblationTachycardia, SupraventricularEpicardial MappingElectrocardiographyModels, CardiovascularHeartWolff-Parkinson-White SyndromeTachycardia, VentricularCardiac Pacing, ArtificialHeart Conduction SystemVoltage-Sensitive Dye ImagingElectrophysiological PhenomenaMyocytes, CardiacAction PotentialsAtrioventricular NodeHeart VentriclesComputer SimulationLong QT SyndromeMyocardiumHeart RatePotassium ChannelsCardiac OutputAlgorithmsDeath, Sudden, CardiacCardiac Surgical ProceduresPatch-Clamp TechniquesCardiomegalyCardiac CatheterizationHeart AtriaMyocardial ContractionHeart DiseasesMembrane Potentials