Many of us grew up thinking about the senses (eyes, ears, nose, skin, and mouth) as the information/signal gatherers, the brain as the control center and the nervous system as the pathways that attach the brain to the muscles and internal organs. Although we now know that this simplistic view of how information is shared within the body is not exactly correct, for the sake of this discussion, we will use this classis paradigm as the basis of our discussion (Figure 1).
