This High Angular Resolution Diffusion Image (HARDI) of the human brain shows long distance connections, or tracts, grouped on the basis of their anatomical neighborhood. Wiring associated with particular brain structures share the same color. In diffusion imaging, the scanner detects movement of water inside neural fibers to reveal their locations. This image is based on first phase HCP data from the MGH/Harvard/UCLA Connectom scanner. Researchers hope to use the same technique to analyze data from a project related to the HCPs second phase that will examine connections in teens with mental illness.