1 The seminal works on orientation sensitivity include “On the Judgment of Angles and Positions of Lines” by Joseph Jastrow, American Journal of Psychology, 1893, vol. 5, p. 214–248; and “Perception and Discrimination As a Function of Stimulus Orientation: The “Oblique Effect” in Man and Animals” by Stuart Appelle, Psychological Bulletin, 1972, vol. 78, p. 266-278.

2 “An Oblique Effect in Aesthetics: Homage to Mondrian (1872–1944)” by Richard Latto, Douglas Brain, and Brian Kelly, Perception, 2000, vol. 29(8), p. 981–987.

3 See, for example, “Texture Segmentation and Pop-Out from Orientation Contrast” by Christoph Nothdurft, Vision Research, 1991, vol. 31, p. 1073–1078.

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