Altered brain activity and functional connectivity after MDMA-assisted therapy for post-traumatic stress disorder
medRxiv Preprint Server May 25, 2022 S. Parker Singleton, Julie B. Wang, Michael Mithoefer et al. 9 citations preprint
In nine veterans and first-responders with chronic PTSD, MDMA-assisted therapy did not significantly increase amygdala-hippocampus resting-state functional connectivity as hypothesized, only showing a trend. After treatment, activation in the cuneus decreased when recalling traumatic versus neutral memories. The amount of PTSD recovery correlated with changes in four functional connections during autobiographical memory recall: left amygdala with left and right posterior cingulate cortex and left insula, and left isthmus cingulate with left posterior hippocampus. These findings suggest that MDMA-AT may alter functional connectivity in brain regions involved in memory and fear processing, but more research is needed to determine if these effects are specific to MDMA-AT compared to other PTSD treatments.