Stereomovement from interocular delay in dynamic visual noise: a random spatial disparity hypothesis.

This paper reports a series of tests of the assumptions entailed in the random spatial disparity hypothesis (Tyler, 1974) of the stereophenomenon that occurs on viewing dynamic visual noise with an interocular delay. The results support the hypothesis in opposition to 2 alternative hypotheses. A new stereophenomenon is reported in which reversed steromovement is perceived when viewing dynamic visual noise that has both an interocular delay and complementary contrast between the 2 eyes. Only the random spatial disparity hypothesis appears to account for this reverse stereophenomenon.