MasksFaceLaryngeal MasksRespiratory Protective DevicesPerceptual MaskingIntubation, IntratrachealAir PressurePattern Recognition, VisualFacial ExpressionManikinsEquipment DesignDisposable EquipmentFiber Optic TechnologyAnesthesia, GeneralPositive-Pressure RespirationRecognition (Psychology)LaryngoscopyPhotic StimulationVisual PerceptionRespiration, ArtificialPsychophysicsHappinessAirway ObstructionRespiratory InsufficiencySensory ThresholdsCricoid CartilageContrast SensitivityProtective ClothingProsopagnosiaTidal VolumeDramaOxygen Inhalation TherapyAnesthesia, InhalationInhalation SpacersNoninvasive VentilationEye Protective DevicesForm PerceptionSubliminal StimulationReaction TimeAerosolsPharyngitisLaryngismusDiscrimination (Psychology)LarynxOrientationVentilators, MechanicalNeuromuscular BlockadeIntermittent Positive-Pressure VentilationPressureAnesthesiaIntubationNebulizers and VaporizersEmotionsEpiglottisTime FactorsMagnetic Resonance ImagingOxygenCross-Over StudiesNoseAttentionPerceptual DistortionInfectious Disease Transmission, Patient-to-ProfessionalAirway ManagementRespirationBeautyAirContinuous Positive Airway PressurePneumonia, AspirationEyebrowsImmobilization