Dr. Krystal is the Robert L. McNeil, Jr. Professor of Translational Research and Professor of Psychiatry and of Neuroscience; Chair, Department of Psychiatry; Chief of Psychiatry, Yale-New Haven Hospital; Director: NIAAA Center for the Translational Neuroscience of Alcoholism; Director, Clinical Neuroscience Division, VA National Center of PTSD.

His laboratory works on the neurobiology and treatment of schizophrenia, alcoholism, PTSD, and depression and has discovered the rapid antidepressant effects of ketamine in humans.

The Ulf von Euler Lecture is an official annual named lecture of Karolinska Institutet. It was instituted by decision of the faculty at KI upon an initiative taken by Ulf von Euler's former students at the time of his passing away in 1983.