title: Implications of spatial summation models for processes of contour perception: a geometric perspective.
mesh_terms: D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008433:Mathematics; D008959:Models, Neurological; D009903:Optical Illusions; D010364:Pattern Recognition, Visual / Q000502:physiology; D014793:Visual Cortex / Q000502:physiology