Your brain, spinal cord and peripheral nerves make up a complex, integrated information-processing and control system known as your central nervous system. In tandem, they regulate all the conscious and unconscious facets of your life.
It's pretty awesome to see an actual neuron and be able to identify it's components A neuron from the hippocampus at magnification. There are approximately 100 billion neurons in the human brain. Image by Dr. Carlo Sala, CNR Institute of Neuroscience
NPR--"Partisan Psychology: Why Do People Choose Political Loyalties Over Facts?"-- essentially discusses why cognitive dissonance influences people to choose emotion over facts, particularly in partisan situations