LIFU for Chronic Pain

This research project is examining the effects of noninvasive brain stimulation on chronic pain. We believe this study will help us to better understand possible treatments for chronic pain patients. Subjects will undergo functional magnetic resonance imaging (fMRI) and a computed tomography (CT) scan, which is a way to take pictures of the brain and skull. Subjects will receive noninvasive brain stimulation using low-intensity focused ultrasound (LIFU) sound waves, to temporarily change brain activity. Subjects will undergo pain testing using a small device that will increase the temperature of their skin and will rate this pain. Brain signals (EEG), heart rate and rhythm, blood pressure, respiration rate, and skin moisture will be monitored. Subjects will complete behavioral questionnaires. Each study session is expected to take 1.5-3 hours. Total participation takes 10 weeks.