Placebo analgesia: Psychological and neurobiological mechanisms

aNational Center for Complementary and Alternative Medicine (NCCAM), National Institute of Mental Health (NIMH) and Clinical Center, Department of Bioethics, National Institutes of Health (NIH), Bethesda, MD, USA bOutpatient Clinic of Behavior Therapy, Department of Psychology, University of Hamburg, Hamburg, Germany cDepartment of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany dNeuroImage Nord, Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany *Corresponding author. Address: National Center for Complementary and Alternative Medicine, National Institute of Mental Health and the Clinical Center, Department of Bioethics, Building 10, Room 1C154, Bethesda, MD 20892-1156, USA. Tel.: +1 301 435 8715; fax: +1 301 496 0760. E-mail address:email protected Article history: Received 14 January 2013; Accepted 4 February 2013.