Ehrenstein illusion

Ehrenstein illusion

T478/0436 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 77.3MB

Downloadable file size: 341.8KB

Price image Pricing

Please login to use the price calculator


This image is part of the feature Illusions

Credit: SCIENCE PHOTO LIBRARY

Caption: Ehrenstein illusion - illusory contours forming circles. Created in 1954 by the psychologist Walter Ehrenstein, this illusion demonstrates the false perception of areas of increased brightness. Crosses are apparently joined by bright white circles. In fact no such circles exist. It is still a source of some debate whether this is due to the brain's attempts to interpolate fragmentary information and infer boundaries, or to the visual cortex pre- processing information before it reaches the conscious parts of the brain.

Release details: Model release not required. Property release not required.

Keywords: ambiguity, ambiguous, boundary, brightness, circle, circles, circular, ehrenstein illusion, illusory, illusory contours, magnitude, neuroscience, optical illusion, perception, psychology, round, trick, trickery vision, vision, visual, visual trick

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.