Anisotropies in the perception of three-dimensional surfaces

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Science  30 Sep 1983:
Vol. 221, Issue 4618, pp. 1409-1411
DOI: 10.1126/science.6612351


The appearance of certain three-dimensional surfaces was found to depend on the orientation of the depth contours forming the surface. This was true both when the depth was specified by motion parallax and when it was specified by binocular disparities. Slowly changing depth surfaces that generated a pattern of relative motions or disparities characterized by a one-dimensional expansion-compression were perceived differently from those that produced a shear transformation.