The brain synthesizes separate sights, sounds, and sensations into a whole. Each lobe (occipital, temporal, parietal, frontal) is anatomically and functionally specialized. The occipital processes only vision. The other three each dedicate a small portion (about 25%) to simple sensory civilities with 75% making up the association cortex. (Restak, Richard, MD. Mysteries of the Mind. p 20. Washington, D.C., National Geographic, 2000.)

Adult brains tend to use the simplest, fastest route to identify objects, while infants and children more often use several senses. This tends to increase the number of associations in the brain. (Katz, Lawrence C., PhD and Manning Rubin. Keep Your Brain Alive. p 95. NY: Workman Publishing Company, Inc., 1999.)

The more information that is received through a variety of paths the more likely the person is to remember things. (Einberger, Kirstin, and Sellick Janelle, MS. Strengthen Your Mind. p 7. MD: Health Professions Press, 2007.)