vision physiology 56 Visual Perception 48 article 46 Male 42 male 42 Animals 40 animal 36 Photic Stimulation 30 photostimulation 30 Brachyura 28 human 24 Humans 22 Crustacea 18 adult 18 Escape Reaction 16 Female 16 Vision 16 escape behavior 16 female 16 nonhuman 16 Adult 14 Visual Pathways 14 controlled study 14 Animalia 12 Decapoda (Crustacea) 12 Electrophysiology 12 Motion Perception 12 human experiment 12 nerve cell 12