title: Evidence for non-linear response processes in the human visual system from measurements on the thresholds of spatial beat frequencies.
mesh_terms: D000221:Adaptation, Ocular; D000328:Adult; D006801:Humans; D008297:Male; D008722:Methods; D055095:Optics and Photonics; D010775:Photic Stimulation; D012160:Retina / Q000502:physiology; D013028:Space Perception; D014792:Visual Acuity