Orbison illusion

Orbison illusion

The Orbison illusion is an optical illusion that was first described by the psychologist William Orbison (1909 – 1981) in 1939. It consists of a figure placed over a background of concentric circles or radial lines. The bounding rectangle and inner square both appear distorted in the presence of the circles or radiating lines. The background gives us the impression there is some sort of perspective. As a result, a distorted shape is seen. This is a variant of the Hering and Wundt illusions.^[1]

References

Optical illusions List of optical illusions Afterimage Barberpole Bezold Blivet Café wall Cornsweet Delboeuf Ebbinghaus Ehrenstein Flash lag Fraser Grid Hering Jastrow Mach McCollough Müller-Lyer Necker Orbison Penrose: stairs triangle Peripheral drift Poggendorff Ponzo Rubin Sander Schroeder Ternus Vertical–horizontal White's Wundt Zöllner Related: Auditory  • Tactile  • Temporal  • Op art Ascending and Descending  • Waterfall Index of the eye Description Anatomy orbit neural pathways Physiology Phenomena appearance visual optical illusions proteins Development Disease Congenital Corneal dystrophy Neoplasms and cancer Other Symptoms and signs Treatment Procedures Drugs infection glaucoma and miosis mydriatics vascular

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