New York, NY (November 30, 2022) Past social trauma is encoded by a population of stress/threat-responsive brain cells that become hyperactivated during subsequent interaction with non-threatening social targets. As a consequence, previously rewarding social targets are now perceived as social threats, which promotes generalized social avoidance and impaired social reward processing that can contribute to psychiatric disorders, according to a study conducted by researchers at the Brain and Body Research Center at Mount Sinai and published November 30 in Nature. In humans, studies have shown that social trauma impairs brain reward function to the extent that social interaction is no...