In neuroscience, the prevalent theory of desire, motivation, and addiction is based on the concepts of "liking" and "wanting." A healthy brain desires something or is motivated to do something that leads to a pleasurable reward. In a healthy brain, "wanting" and "liking" are in harmony. However, brain substrates for "wanting" are more broadly distributed and more readily activated than substrates for "liking"; so the harmony can be destroyed. Behaviors that cause extreme pleasure (e.g., … [Read more...]