Persistence of Induction Influence for Ebbinghaus, Müller-Lyer, and Poggendorff Illusions - Abstract
Geometric illusions produce distortions of visual space perception, and there are numerous theories about why those distortions occur. Temporal separation of the stimulus elements to be judged from elements that bias the perception may provide additional insight into the nature of illusion mechanisms. Three experiments were conducted wherein respondents were asked to judge size (Ebbinghaus), length (Müller-Lyer), or alignment of segments (Poggendorff). Illusion effects grew weaker with progressively greater delay in the display of illusion-producing elements, but each illusion manifested a different profile of decline. These results contribute to the discussion of processing stages for the respective judgments, and evaluation of which brain areas mediate illusion effects.