This disclosure provides systems, methods, and apparatus related to functional magnetic resonance imaging. In one aspect, a method may include generating a bulk magnetization in a subject, establishing a longitudinal relaxation time constant (T.sub.1) contrast between constituents in the subject, creating spatially localized magnetic resonance (MR) signals from the subject, detecting the MR signals, and generating a functional image of the subject.
STATEMENT OF GOVERNMENT SUPPORT
 This invention was made with government support under Contract No. DE-AC02-05CH11231 awarded by the U.S. Department of Energy. The government has certain rights in this invention.