Circadian RhythmPeriodicityBiological ClocksSuprachiasmatic NucleusPeriod Circadian ProteinsCircadian Rhythm Signaling Peptides and ProteinsActivity CyclesPhotoperiodSleep Disorders, Circadian RhythmCircadian ClocksAlpha RhythmCLOCK ProteinsAtrial FibrillationARNTL Transcription FactorsLightDarknessChronobiology DisordersTime FactorsElectric CountershockRaynaud DiseaseElectrocardiographyMotor ActivityBeta RhythmAnti-Arrhythmia AgentsCryptochromesBody TemperatureHeart RateSleepHeart Conduction SystemDelta RhythmArrhythmias, CardiacJet Lag SyndromeCatheter AblationElectroencephalographyNeuronsModels, BiologicalHeart AtriaAccelerated Idioventricular RhythmNo-Reflow PhenomenonAction PotentialsCardiac Pacing, ArtificialOscillometryChronobiology PhenomenaWakefulnessNerve NetAtrial FlutterBehavior, AnimalElectrophysiologyFeeding BehaviorLocomotionAtrioventricular NodeLightingAmiodaroneElectrophysiologic Techniques, CardiacHydrocortisoneGene Expression RegulationHeart BlockNuclear Receptor Subfamily 1, Group D, Member 1Models, NeurologicalRespirationArrhythmia, SinusBrainAnalysis of VarianceRats, Sprague-DawleyPacemaker, ArtificialMutationRNA, MessengerTreatment OutcomeCardiac Complexes, PrematureSinoatrial NodeMice, Inbred C57BLTachycardia, SupraventricularComputer SimulationGanglia, InvertebrateElectrocardiography, AmbulatoryTemperatureAtrial Function, LeftMedulla OblongataElectric StimulationRats, WistarRespiratory MechanicsMesocricetusCorticosteroneMolecular Sequence DataAnimals, NewbornDrug ChronotherapySeasonsHeart ArrestCasein Kinase IepsilonPulmonary VeinsDrosophila ProteinsTelemetryAtrial FunctionPhotic StimulationAdaptation, PhysiologicalArylalkylamine N-AcetyltransferasePhototherapyNeuropeptidesFlavoproteinsTranscription Factors