A modified multiplicative rule describes backward masking in a photoreceptor.
D000200:Action Potentials; D000818:Animals; D001181:Arthropods; D003623:Dark Adaptation; D066298:In Vitro Techniques; D009433:Neural Inhibition; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000502:physiology*; D014796:Visual Perception