PsychophysicsSensory AidsSensory ThresholdsDiscrimination (Psychology)Photic StimulationRefractory Period, PsychologicalVisual PerceptionDifferential ThresholdForm PerceptionMotion PerceptionContrast SensitivityPattern Recognition, VisualVision, LowModels, PsychologicalDepth PerceptionSignal Detection, PsychologicalReadingPerceptual MaskingVisual CortexColor PerceptionVision TestsModels, NeurologicalFixation, OcularOrientationAuditory PerceptionPerceptionVisual PathwaysVision, OcularVisual FieldsVision DisparityCuesAcoustic StimulationHistocompatibility Antigens Class IDiscrimination LearningVision, BinocularElectroretinographyHistocompatibility Antigens Class IIReaction TimeAttentionVisual Field TestsVisual AcuityMagnetic Resonance ImagingBrain MappingPsychomotor PerformanceTime FactorsNeuronsMolecular Sequence DataAmino Acid Sequence