Analysis of information sources in references of the Wikipedia article "Shepard tables" in English language version.
For example, the famous Shepard tabletop illusion (Shepard, 1981) is more convincing when the planes are embedded in box shapes than when they are presented in isolation.
size and shape constancy subjectively expand the near-far dimension along the line of sight to compensate for geometrical foreshortening.
Because the inference about orientation, depth, and length are provided automatically by underlying neuronal machinery, any knowledge or understanding of the illusion we may gain at the intellectual level remains virtually powerless to diminish the magnitude of the illusion.
Photocopy this page and then ..cut around the trapezoid shapes…The effect is a version of the classic Shepard Tabletop illusion.
The children with ASD (M = .14, SD = .10) were less susceptible to the Shepard's tabletops illusion than the typically developing children (M = .20, SD = .05), t (28) = 2.41, p = .043.
One of the most profound visual illusions .. is the Shepard tabletop illusion, in which the perspective view of two identical parallelograms as tabletops at different orientations gives a completely different sense of the aspect ratio of the implied rectangles in the two cases (Shepard 1990).
The three pink- and blue-colored parallelograms are the same. All blue lines are equal in length; all pink lines are also equal. Box B is simply Box C rotated counterclockwise. But the three parallelograms look different, and boxes B and C look different.
[The Shepard tables] illusion is one of the strongest optical illusions that exists, on average the apparent size difference is 20–25%. Our preliminary work and earlier work performed by others (Mitchell, Mottron, Soulieres, & Ropar, 2010) reveal how susceptibility to this particular illusion is diminished considerably in persons with an ASD.
One of the most profound visual illusions .. is the Shepard tabletop illusion, in which the perspective view of two identical parallelograms as tabletops at different orientations gives a completely different sense of the aspect ratio of the implied rectangles in the two cases (Shepard 1990).
One of the most profound visual illusions .. is the Shepard tabletop illusion, in which the perspective view of two identical parallelograms as tabletops at different orientations gives a completely different sense of the aspect ratio of the implied rectangles in the two cases (Shepard 1990).
Recently Lydia Maniatis pointed out a puzzling aspect of the illusion, in her prize-winning entry for the Illusion of the Year Competition.
The illusion was first presented by the US psychologist Roger N(ewland) Shepard (born 1929) in his book Mind Sights: Original Visual Illusions, Ambiguities, and Other Anomalies (1990, p. 48). Shepard commented that 'any knowledge or understanding of the illusion we may gain at the intellectual level remains virtually powerless to diminish the magnitude of the illusion' (p. 128).
[The Shepard tables] illusion is one of the strongest optical illusions that exists, on average the apparent size difference is 20–25%. Our preliminary work and earlier work performed by others (Mitchell, Mottron, Soulieres, & Ropar, 2010) reveal how susceptibility to this particular illusion is diminished considerably in persons with an ASD.
