title: A quantitative model for simultaneous brightness induction.
abstract: The brightness that results from stimulating a particular test-region of the retina may be depressed or enhanced by simultaneous stimulation of other "inducing"-regions. The test-region brightness may be affected by contiguous inducing-regions (local contrast effects), and by non-contiguous inducing regions (long-range effects sometimes called "assimilation"). We describe a computational model for early vision that can predict the results of brightness-matching procedures commonly used to measure these phenomena. According to this model, brightness depression reflects primarily lateral inhibition that underlies local contrast effects; whereas brightness enhancement results from processes similar, in spirit, to those described in Helson's adaptation-level theory.
authors.affiliation: Department of Psychology, Brooklyn College of the City University of New York 11210, USA.
authors.forename: E G
authors.initials: EG
authors.lastname: Heinemann
authors.forename: S
authors.initials: S
authors.lastname: Chase
mesh_terms: D015350:Contrast Sensitivity / Q000502:physiology; D006801:Humans; D008027:Light; D008433:Mathematics; D008959:Models, Neurological; D009433:Neural Inhibition; D010775:Photic Stimulation; D010783:Photometry; D011601:Psychophysics; D012160:Retina / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*