-Â Â Â Â Â Â The difference betweensensation and perception. The difference between bottom-up andtop-down processing, this is as important as it can get. Examplesof top-down processing related factors such as visual context,expectations effects, regularities in the environment, and theGestalt rules of perceptual grouping. Examples of depth cues mustbe familiar and they could be discussed in relation to bottom-upand top-down processing. The role of top-down processing in thehollow-face illusion and the Ames room illusion is important.
