Effects of surround size and luminance on metacontrast.
D000221:Adaptation, Ocular; D000328:Adult; D005403:Fixation, Ocular; D006801:Humans; D008027:Light; D008029:Lighting; D008297:Male; D055095:Optics and Photonics; D012160:Retina / Q000502:physiology; D014796:Visual Perception