Dr. Tregellas is interested in food intake behaviors and the development of obesity, both in people with and without schizophrenia. In collaboration with Dr. Marc Cornier in the Department of Endocrinology, Dr. Tregellas’ imaging studies have revealed which brain networks are involved food intake behaviors, how these networks differ between obese and thin individuals, and how different diets affect neuronal responses. Drs. Tregellas and Cornier recently have begun new studies of the effects of bariatric surgery on neuronal responses to visual food cues.