Sleep StagesSleepSleep, REMPolysomnographySleep DisordersWakefulnessSleep Apnea SyndromesElectroencephalographyArousalSleep Apnea, ObstructiveElectrooculographyNocturnal Myoclonus SyndromeSleep Initiation and Maintenance DisordersDelta RhythmSleep Apnea, CentralCircadian RhythmSleep DeprivationSignal Processing, Computer-AssistedSupine PositionElectromyographyTime FactorsRespirationAutonomic Nervous SystemHeart RateBody TemperatureNonlinear DynamicsPostureSeverity of Illness IndexActigraphyReference ValuesAnalysis of VarianceOxygenDisorders of Excessive SomnolenceBrainSleep BruxismSleep Disorders, IntrinsicElectrocardiography