Sleep StagesTrazodoneAutomobile DrivingHolidaysHistamine H1 AntagonistsMetoclopramideAmitriptylineDibenzazepinesDouble-Blind MethodSleepInfrared RaysHypnotics and SedativesOcular Physiological PhenomenaElectroencephalographySleep Initiation and Maintenance DisordersWakefulnessPlacebosFatigueArousalDiazepamAccidents, TrafficAnalgesics, OpioidVomitingNauseaEpilepsyCross-Over StudiesPain, PostoperativeAnticonvulsantsClinical Trials as TopicPsychomotor PerformanceAdministration, OralPainDrug Administration ScheduleTime FactorsTreatment OutcomeDose-Response Relationship, DrugProspective Studies