NeuronsNeurons, AfferentMyocytes, CardiacMotor NeuronsCardiac OutputHeartAction PotentialsArrhythmias, CardiacCardiac Surgical ProceduresDeath, Sudden, CardiacCells, CulturedDopaminergic NeuronsElectrophysiologyPatch-Clamp TechniquesTime FactorsGABAergic NeuronsAnimals, NewbornElectric StimulationHippocampusMembrane PotentialsSynapsesCardiomegalyCardiac TamponadeCardiac Pacing, ArtificialAxonsGanglia, SpinalSynaptic TransmissionHeart DiseasesRats, WistarSensory Receptor CellsDendritesMyocardiumNerve Tissue ProteinsCalciumOlfactory Receptor NeuronsCardiac CatheterizationSpinal CordMyocardial ContractionCerebral CortexNeurons, EfferentImmunohistochemistryCholinergic NeuronsMice, Transgenicgamma-Aminobutyric AcidRats, Sprague-DawleyHeart ArrestMice, Inbred C57BLNeural InhibitionHeart VentriclesMotor Neuron DiseaseModels, NeurologicalMedulla OblongataCatsPyramidal CellsBrainDisease Models, AnimalDopamineMice, KnockoutMyoblasts, CardiacNeuropeptidesHeart FailureExcitatory Postsynaptic PotentialsCardiomyopathiesMesencephalonInterneuronsHeart RateElectrocardiographySignal TransductionCardiac MyosinsCardiac Imaging TechniquesSerotonergic NeuronsCardiac GlycosidesTetrodotoxinGlutamic AcidEchocardiographyCardiac Output, LowBrain StemHemodynamicsRNA, MessengerOut-of-Hospital Cardiac ArrestAfferent PathwaysTyrosine 3-MonooxygenaseDose-Response Relationship, DrugSodium ChannelsGanglia, InvertebrateAnalysis of VarianceMyocardial InfarctionCardiac VolumeCell CountGangliaVentricular RemodelingHeart TransplantationCell DifferentiationGreen Fluorescent ProteinsNerve NetVagus NerveGene Expression Regulation, DevelopmentalBack InjuriesVentricular Function, LeftGanglia, Sympathetic