Bioscience Technology (Rockaway, N.J., Nov. 13) -- To better understand and one day provide improved treatments for depression, addiction and anxiety, researchers at the Washington University School of Medicine are using tiny, electronic devices to identify and map neural circuits in the brain. Michael Bruchas, a professor of anesthesiology, and his colleagues will conduct studies with micro-LED devices that his group recently co-developed with a team at the U. of I.