Sleep DeprivationSleepWakefulnessSleep, REMSleep StagesArousalBoredomPolysomnographySleep DisordersElectroencephalographyCircadian RhythmPsychomotor PerformanceSleep Initiation and Maintenance DisordersReaction TimeActigraphyTask Performance and AnalysisMemory, Short-TermTime FactorsAnalysis of VarianceAttentionDisorders of Excessive SomnolenceSleep Apnea SyndromesSleep Apnea, ObstructiveSleep Disorders, Circadian RhythmElectrooculographyHypnotics and SedativesSensory DeprivationElectromyographyWork Schedule ToleranceAzabicyclo CompoundsFatigueWater DeprivationFood DeprivationMelatoninAffectIntroversion (Psychology)HomeostasisPsychosocial DeprivationDelta RhythmNocturnal Myoclonus SyndromeBody TemperatureCross-Over StudiesBrainCognition