Circadian RhythmSleep Disorders, Circadian RhythmSuprachiasmatic NucleusPeriod Circadian ProteinsCircadian Rhythm Signaling Peptides and ProteinsCLOCK ProteinsBiological ClocksCircadian ClocksPhotoperiodARNTL Transcription FactorsChronobiology DisordersMelatoninActivity CyclesLightDarknessJet Lag SyndromeCryptochromesBody TemperatureSleepMotor ActivityPeriodicityNuclear Receptor Subfamily 1, Group D, Member 1Pineal GlandPhototherapyGene Expression RegulationCasein Kinase IepsilonChronotherapyTime FactorsLightingSignal TransductionTranscription FactorsChronobiology PhenomenaFlavoproteinsModels, BiologicalRNA, MessengerWakefulnessHydrocortisoneMutationMice, Inbred C57BLBehavior, AnimalMolecular Sequence DataArylalkylamine N-AcetyltransferaseNuclear ProteinsDrosophila ProteinsFeeding BehaviorDrug ChronotherapyReceptors, MelatoninMesocricetusRod OpsinsSeasonal Affective DisorderNeuronsFeedback, PhysiologicalBasic Helix-Loop-Helix Transcription FactorsNuclear Receptor Subfamily 1, Group F, Member 1Light Signal TransductionOscillometryCorticosteroneWork Schedule ToleranceTranscription, GeneticHeart RateLuciferasesPhotoreceptor Cells, InvertebrateDorsomedial Hypothalamic NucleusGene Expression ProfilingSleep DeprivationSynechococcusCells, CulturedPromoter Regions, GeneticNeuropeptidesOcular Physiological PhenomenaDyssomniasMice, KnockoutPhosphorylationAmino Acid SequenceCell Cycle ProteinsAtrial FibrillationTrans-ActivatorsAlpha RhythmGene Expression Regulation, PlantDrosophilaGene ExpressionAnimals, Genetically ModifiedReverse Transcriptase Polymerase Chain ReactionProtein BindingTelemetryCell LineSalivaBase SequenceGanglionectomyRats, Sprague-DawleyDrosophila melanogasterArabidopsisSleep StagesBrainEatingCasein Kinase IdeltaDNA-Binding ProteinsNeurospora crassaE-Box ElementsArabidopsis Proteins