Explain how both bottom-up and top-down processing are involved in the "crystal running on the beach" example.

Of the four approaches to object perception ottom-up processing than the others. Modern psychologists have suggested a connection between the Gestalt principles and past experience. Perception starts with bottom-up processing, which involves stimulation of the receptors, creating electrical signals that reach the visual receiving area of the brain. Perception also involves top-down processing, which originates in the brain. shifting attention by making eye movements. - determined by bottom-up processes such as stimulus salience and by top-down processes such as scene schemas and task demands, which influence how eye movements are directed to parts of a scene. examples of top-down processing: multiple personalities of a blob and finding faces in a landscape; how knowledge of a language makes it possible to perceive individual words; and how the perception of pain is influenced by things other than the pain stimulus