SleepSleep, REMSleep DisordersWakefulnessSleep Apnea, ObstructivePolysomnographySleep Apnea SyndromesSleep Initiation and Maintenance DisordersElectroencephalographyREM Sleep Behavior DisorderArousalDreamsElectrooculographySleep StagesDelta RhythmNarcolepsyCircadian RhythmActigraphySleep Apnea, CentralDisorders of Excessive SomnolenceElectromyographySleep Disorders, IntrinsicPonsSleep BruxismSleep ParalysisBrain WavesCataplexySleep Medicine SpecialtyTime FactorsAlpha RhythmSnoringHippocampusNocturnal Myoclonus SyndromeSleep Arousal DisordersSleep DeprivationREM Sleep ParasomniasAnalysis of VarianceContinuous Positive Airway PressureCortical SynchronizationBiological ClocksHypnotics and SedativesMelatoninQuestionnairesSleep-Wake Transition DisordersSignal Processing, Computer-AssistedElectrodes, ImplantedMemorySeverity of Illness IndexTegmentum MesencephaliSeptum of BrainPedunculopontine Tegmental NucleusBrainReticular FormationRespirationReaction TimeNeuronsFatigueHabitsRats, Long-EvansLod ScoreRats, Sprague-DawleyBody TemperaturePeriodicityCryptophytaActivity CyclesGenetic LinkageCerebral CortexBehavior, AnimalRestless Legs SyndromeOrexin ReceptorsElectroencephalography Phase SynchronizationMonomeric GTP-Binding ProteinsEntorhinal CortexPsychomotor PerformanceMuscle HypotoniaAction PotentialsNeural PathwaysTheta RhythmHomeostasisPedigreeEvoked PotentialsMotor ActivityNerve NetBrain MappingAzabicyclo CompoundsReceptors, NeuropeptidePharyngeal MusclesSleep Phase ChronotherapyNeuropeptidesMental RecallCholinergic AgonistsCross-Over StudiesRespiratory MechanicsCatsCross-Sectional StudiesBeta RhythmPharynxHypothalamus, PosteriorHypothalamic Area, LateralOscillometry