title: Sensitization by annular surrounds: sensitization and masking.
mesh_terms: D000221:Adaptation, Ocular; D003623:Dark Adaptation; D006801:Humans; D008027:Light; D009474:Neurons / Q000502:physiology; D010786:Photoreceptor Cells / Q000502:physiology; D013997:Time Factors; D014796:Visual Perception