Intensity-response nonlinearities and the theory of edge localization.
If an edge having a particular blur profile is exchanged for an edge at the same location but having a different blur profile, apparent movement between the two edges may be seen. The spatial extent of this movement was measured by a cancellation technique. Implications for the theory of edge location are discussed, including the possibility that spatial filtering is preceded by a nonlinear transduction stage.
D005374:Filtration; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008959:Models, Neurological; D009039:Motion Perception / Q000502:physiology; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation; D012684:Sensory Thresholds; D014792:Visual Acuity