By Meredith Wadman
October 25, 2016

Joshua Gordon was a first year M.D.- Ph.D. student at the University of California in San Francisco bent on a career in cancer biology when he heard a talk describing how electrically stimulating cells in a key area of the brains of monkeys could alter the animals' perception of which direction dots were moving on a computer screen. The power of that manipulation-and the vast possibilities for probing the brain that it suggested-captivated Gordon. He was hooked. He switched his Ph.D. focus to neuroscience.