1 Berenson-Allen Center for Noninvasive Brain Stimulation and Division of Cognitive Neurology, Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston (Burke, Cappon, Pascual-Leone, Santarnecchi); the Program in Placebo Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston (Burke, Faria, Kaptchuk); the Department of Psychiatry, Hurvitz Brain Sciences Program, Sunnybrook Health Sciences Centre, University of Toronto (Burke); the Department of Otorhinolaryngology, Smell and Taste Clinic, Technische Universität Dresden, Dresden, Germany (Faria); the Department of Psychology, Uppsala University, Uppsala, Sweden (Faria); the Department of Anesthesiology, Perioperative and Pain Medicine, Center for Pain and the Brain, Boston Children's Hospital, Harvard Medical School, Boston (Faria); Institut Guttmann, Universitat Autonoma, Barcelona, Spain (Pascual-Leone); and the Hinda and Arthur Marcus Institute for Aging Research and Center for Memory Health, Hebrew SeniorLife Department of Neurology, Harvard Medical School, Boston (Pascual-Leone).