In this March 26, 2015 photo provided by the Stanford School of Medicine, Dr. Karl Deisseroth, professor of psychiatry and behavioral sciences and of bioengineering at Stanford University, poses for a photo on the school's campus in Stanford, Calif. Deisseroth and Xiaoliang Sunney Xie, whose work on modern research technologies is expected to speed the pace of medical discoveries, will share one of the richest prizes in medicine and science next month in New York.