As a result of the work of Mountcastle, Hubel, and Wiesel, we can begin to discern the principles of cognitive psychology on the cellular level. These scientists confirmed the inferences of the Gestalt psychologists by showing us that the belief that our perceptions are precise and direct is an illusion—a perceptual illusion. The brain does not simply take the raw data that it receives through the senses and reproduce it faithfully. Instead, each sensory system first analyzes and deconstructs, then restructures the raw, incoming information according to its own built-in connections and
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