Kanizsa figure does not defend against saccadic compression of visual space.
Recent studies have suggested that the apparent shape of a perceptually organized object flashed immediately before saccade is not distorted although a perisaccadic flash is mislocalized as if the visual space is compressed toward the goal of the saccade. We report that the apparent width of a Kanizsa illusory rectangle flashed in the perisaccadic period was compressed as much as that of a control stimulus that did not induce illusory rectangle, while that of a rectangle with real contour was less compressed. Our results imply that the process of saccadic compression of visual space completes faster than the interpolation process of illusory contours.
Sogo
Hiroyuki
H
Department of Psychology, Graduate School of Letters, Kyoto University, Yoshida-Honmachi, Sakyo, Kyoto 606-8501, Japan. hsogo@bun.kyoto-u.ac.jp
Osaka
Naoyuki
N
D000328:Adult; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D009903:Optical Illusions / Q000502:physiology*; D011601:Psychophysics; D012438:Saccades / Q000502:physiology*