ElectroencephalographySignal Processing, Computer-AssistedAlpha RhythmAutonomic Nervous SystemSleep StagesFourier AnalysisHeart RateDelta RhythmEpidemiologic MeasurementsBeta RhythmBrain WavesSpectrum AnalysisSleep, REMBaroreflexSleepCortical SynchronizationWakefulnessAutonomic Nervous System DiseasesCardiovascular Physiological PhenomenaPolysomnographyBlood PressureSleep DeprivationTheta RhythmVagus NerveArousalPeriodicityMagnetoencephalographySympathetic Nervous SystemRespirationBrain MappingElectrocardiographyCerebral CortexBrainBiological ClocksRestEvoked PotentialsTime FactorsPsychomotor PerformanceHeartReference ValuesPower PlantsAnalysis of VarianceElectric Power SuppliesPower (Psychology)SpectrophotometryMagnetic Resonance SpectroscopyAlgorithmsSpectral KaryotypingSpectrophotometry, InfraredSound SpectrographyNuclear Power PlantsRetinal PigmentsSpectrophotometry, UltravioletSpectrum Analysis, RamanReproducibility of ResultsAcoustic StimulationMicrospectrophotometrySpectrometry, FluorescenceLightComputer SimulationColor PerceptionColorTomography, Optical CoherenceSpeech AcousticsMass SpectrometryMolecular StructureModels, StatisticalSensitivity and SpecificityUltrasonography, DopplerAuditory PerceptionColor VisionRetinal Cone Photoreceptor CellsOptics and PhotonicsSpeech PerceptionEquipment DesignData Interpretation, StatisticalRod OpsinsPitch PerceptionElectron Spin Resonance SpectroscopyKineticsAcousticsSpectroscopy, Near-InfraredSample SizePsychoacousticsModels, BiologicalAuditory ThresholdModels, TheoreticalCircular DichroismNoiseImage Processing, Computer-AssistedEquipment Failure AnalysisOxidation-ReductionAuditory CortexSoundLasersFractalsPhotonsSignal-To-Noise RatioSoftwareColor Vision Defects