In an effort to better differences between brain networks of HD-positive individuals prior to onset of symptoms and control subjects without the mutation, researchers at Beth Israel Deaconess Medical Center, in partnership with Harvard University's Center for Brain Science, have launched a new study to visualize brain networks. Functional magnetic resonance imaging (fMRI) will be used to look at changes in blood flow to areas of the brain in both HD positive individuals and healthy controls ages 18-65. The study involves 3 MRI visits over 18 months, and subjects will be compensated for their participation. If you're interested in learning more, check out the study flyers for HD-positive individuals and healthy controls, or contact for more information.