NorepinephrineArousalWakefulnessNorepinephrine Plasma Membrane Transport ProteinsSleep Disorders, Circadian RhythmSleep DeprivationWork Schedule ToleranceSleepDisorders of Excessive SomnolenceCircadian RhythmAttentionNeuroanatomySleep StagesElectrooculographyPsychomotor PerformanceElectroencephalographyPolysomnographyEpinephrineMelatoninSympathetic Nervous SystemAffectFatigueCatecholaminesHypnotics and SedativesAdrenergic Uptake InhibitorsAviationDesipramineCentral Nervous System StimulantsAromatherapyAdrenergic alpha-AgonistsConscious SedationReaction TimeAlpha RhythmPropofolDopamine beta-HydroxylaseTime FactorsBody TemperatureAnalysis of VarianceHeart RateCognitionVasoconstrictor AgentsReflex, PupillaryAsthenopiaAutomobile DrivingReceptors, Adrenergic, alphaDose-Response Relationship, DrugCaffeineConsciousness MonitorsDeep SedationDouble-Blind MethodNeuropsychological TestsAdrenergic alpha-AntagonistsReceptors, AdrenergicConsciousnessCross-Over StudiesLightingBlood PressureAnesthesia Recovery PeriodBenzhydryl CompoundsDopaminePersonnel Staffing and SchedulingLocus CoeruleusAnesthetics, IntravenousTask Performance and AnalysisReceptors, Adrenergic, alpha-2TyramineBrainSleep DisordersFlicker FusionReceptors, Adrenergic, betaMethoxyhydroxyphenylglycolSympathomimeticsLightPhototherapyPhentolaminePropranololVasoconstrictionAdrenergic AgentsDextroamphetamineBiogenic MonoaminesFentanylYohimbineDogsRats, Sprague-DawleyPrazosinHydrocortisoneOccupational HealthReceptors, Adrenergic, alpha-1Adrenergic FibersAdrenergic alpha-2 Receptor AntagonistsNormetanephrineNeurotransmitter Uptake InhibitorsMidazolamEducation of Intellectually DisabledSerotoninSleep Initiation and Maintenance DisordersAdrenergic AntagonistsHemodynamicsClonidineVascular Resistance