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Science 26 May 1989:
Vol. 244. no. 4907, pp. 959 - 961
DOI: 10.1126/science.2727687
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Articles

Science, Vol 244, Issue 4907, 959-961
Copyright © 1989 by American Association for the Advancement of Science

articles

Binocular depth reversals despite familiarity cues

A van den Enden and H Spekreijse

The Netherlands Ophthalmic Research Institute, Amsterdam.

Stereoscopic depth can be reversed by interchanging the left- and right-eye views (pseudoscopy) when abstract stereograms are used, but not when stereograms contain natural objects or scenes. This resistance to reversal of depth has traditionally been attributed to familiarity with the shape of objects and the presence of monocular depth cues. However, when texture disparity is neutralized by making the texture perspective of surfaces identical for both eyes, even a highly familiar object, like a monocularly recognizable human face, appears as concave (nose pointing inwards) when viewed pseudoscopically.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Effects of different subanaesthetic doses of (S)-ketamine on psychopathology and binocular depth inversion in man.
T. Passie, M. Karst, M. Borsutzky, B. Wiese, H. M. Emrich, and U. Schneider (2003)
J Psychopharmacol 17, 51-56
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