Contrast Sensitivity Humans 7 contrast sensitivity 7 human 7 physiology 6 adult 5 Adult 4 Female 4 Male 4 female 4 male 4 Light 3 Young Adult 3 color vision 3 pattern recognition 3 young adult 3 Adolescent 2 Color 2 Color Perception 2 Form Perception 2 Motion Perception 2 Photic Stimulation 2 Psychophysics 2 adolescent 2 human experiment 2 light 2 movement perception 2 photostimulation 2 psychophysics 2 Aged 1