Traumatic social experience blocks social reward and promotes sustained social avoidance, study finds

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Traumatic social experience blocks social reward and promotes sustained social avoidance, study finds
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Traumatic social experience blocks social reward and promotes sustained socialavoidance, study finds mountsinainyc nature

. In rodents, chronic social defeat stress, a model of social trauma, has been used to understand the brain circuit mechanisms underlying stress susceptibility versus resilience, yet little is known regarding its impact on social reward.

"To better understand how traumatic social experience affects social reward, we tested social interaction and social preference with a same-sex juvenile mouse that, under control conditions, is rewarding," said Long Li, Ph.D., Instructor of Neuroscience at the Icahn School of Medicine at Mount Sinai and lead author of the study.

The mice were classified as resilient or susceptible to the stressor based on their social interaction behavior. This was followed by an additional social interaction test called resident-intruder test in which a 4–6-week-old same-sex mouse was introduced into the subjects' homecage and allowed to freely interact.

Furthermore, social investigation time, social avoidance, and latency to investigate correlated with social interaction ratios during testing with an aggressive adult mouse.

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