Scientists at the cutting-edge of neurobiology are studying the rhythms of electrical activity within the brain and learning more about how malfunctioning neural circuitry links to mental illness. Kafui Dzirasa, one of the pioneers in the field, is trying to build a “pacemaker for the brain,” drawing on new technologies to stimulate neurons, alter electrical patterns, and change the communications pathways that underlie complex social behavior. The hope of birthing a new generation of novel treatments for bipolar disorder, depression, and other psychiatric conditions might just be within reach of this former long jump conference champion.