Bottom-up processing involves perceiving based on information that is Bottom- up processing is an explanation for perception that involves starting . How Psychology Explains How Expectations Influence Your Perceptions.
These are the top-down processing and the bottom-up processing. Psychology > Being a strong support of the bottom up processing approach, Gibson.
This controversy is discussed with respect to Gibson (1966) who has proposed a direct theory of perception which is a 'bottom-up' theory, and Gregory (1970).