Bingel U, Schoell E, Büchel C. Imaging pain modulation in health and disease. Curr Opin Neurol. 2007 Aug;20(4):424-31. PURPOSE OF REVIEW: In this review, we discuss recent advances in pain imaging research. We focus on the involvement of endogenous pain control mechanisms in the healthy central nervous system and the potential contribution of failure within this system for chronic pain...