Stewart Clark is an assistant professor of pharmacology at the State University of New York at Buffalo. His research explores the characterization of two neuropeptide systems: urotensin II and neuropeptide S. Both of these systems regulate basal ganglia function through the activation of a receptor in the superfamily G protein-coupled receptors (GPCR). Clark helped establish the behavioral effects mediated by the exogenous administration of urotensin II and neuropeptide S, and the neuroanatomical distribution of their receptors in the CNS. This foundational work has directly led to his investigation of neural circuitry-behavioral relationships and drug discovery for these two systems. Clark received his undergraduate degree in biology and psychology from McMaster University in Canada. He obtained his PhD from the University of California, Irvine and completed a postdoctoral fellowship at the Centre for Addiction and Mental Health in Toronto.