We are interested in the “hidden” intermediate visual processes that are difficult to study because they are far from the retina (light stimulus) and also far from the observer’s behavior. There are good reasons to think that there are many intermediate processes and that they are important for perception. These processes were an important part of Naomi Weisstein’s interests (see, for example, Weisstein & Harris, 1980; Weisstein et al., 1975).