The difference between sensation and perception. The differencebetween bottom-up and top-down processing is as important as it canget. Examples of top-down processing-related factors such as visualcontext, expectations effects, regularities in the environment, andthe Gestalt rules of perceptual grouping. Examples of depth cuesmust be familiar and they could be discussed in relation tobottom-up and top-down processing. The role of top-down processingin the hollow-face illusion and the Ames room illusion isimportant.
