Sleep-Wake Transition DisordersSleepWakefulnessSleep, REMSleep DisordersChronobiology DisordersCircadian RhythmSleep Disorders, Circadian RhythmPolysomnographyActigraphyArousalElectroencephalographySleep StagesSleep DeprivationSleep Initiation and Maintenance DisordersOrexin ReceptorsNarcolepsySleep Apnea, ObstructiveSleep Apnea SyndromesReceptors, NeuropeptideCataplexyJet Lag SyndromeElectromyographyNeuropeptidesBipolar DisorderMelatoninBody TemperatureMonitoring, AmbulatoryTime FactorsMental Disorders