title: Beyond multiple pattern analyzers modeled as linear filters (as classical V1 simple cells): useful additions of the last 25 years.
abstract: This review briefly discusses processes that have been suggested in the last 25 years as important to the intermediate stages of visual processing of patterns. Five categories of processes are presented: (1) Higher-order processes including FRF structures; (2) Divisive contrast nonlinearities including contrast normalization; (3) Subtractive contrast nonlinearities including contrast comparison; (4) Non-classical receptive fields (surround suppression, cross-orientation inhibition); (5) Contour integration.
authors.affiliation: Department of Psychology, Columbia University, NY, NY 10027, USA. nvg1@columbia.edu
authors.forename: Norma V
authors.initials: NV
authors.lastname: Graham
mesh_terms: D006801:Humans; D008959:Models, Neurological; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011984:Sensory Receptor Cells / Q000502:physiology*; D014795:Visual Pathways / Q000502:physiology*