The Organization for Human Brain Mapping (OHBM) is the primary international organization dedicated to using neuroimaging to discover the organization of the human brain. The organization was created in 1995 and has since evolved in response to the explosion in the field of human functional neuroimaging and its movement into the scientific mainstream. One of the primary functions of the organization is to provide an educational forum for the exchange of up-to-the-minute and groundbreaking research across modalities exploring Human Brain Mapping. It does this through a growing membership and an annual conference, held in different locations throughout the world. The 21st Annual Meeting of the Organization for Human Brain Mapping (OHBM) will be held June 14-18, 2015 at the Hawaii Convention Center in Honolulu, Hawaii, USA. The OHBM meeting draws over 2,500 attendees each year and boasts a combination of exciting scientific programs and social events.