Addiction, What Happens When Motivation Disfunctions?

Addiction can be seen as a motivational malfunction. The drive to do something far exceeds its value, which may even be negative. Some drugs act directly upon the motivational circuitry of our brain. Fear and anxiety are the opposite side of the motivational coin. While drives compel us to act, fears compel us to avoid. Nero science offers us tantalizing clues to how motivation operates within the brain.