Dynamic properties of a model post-retinal, short-terra visualstore called a retinoid are presented. The retinoid modelgenerates specific predictions about visual perception in several variants of the seeing-more-than-is-there (SMTT) paradigm.Three experiments were conducted to test for the predictedeffects. Performance curves are presented and discussed. Anew visual illusion of motion is shown to follow from the properties of the retinoid model.