“…While higher HRV scores in healthy controls predicted increased functional connectivity within regions of the CAN (vmPFC to bilateral insula; left amygdala to the left PAG; PAG to right medial and superior PFC dorsal cingulate cortex, and left thalamus; for metaanalyses see also [Beissner et al, 2013;Thayer et al, 2012], measures of HRV within the PTSD group were unrelated with functional connectivity within CAN-related brain regions. Interestingly, a recent positron emission tomography study in PTSD found an increased correlation between HR and activation in orbitofrontal, precentral and occipital regions in response to traumatic scripts solely among individuals with PTSD [Barkay et al, 2012], suggesting that sensorimotor regions might regulate the stress response induced by traumatic scripts in PTSD. Such a pattern has indeed been reported across a number of different paradigms including emotion-provoking pictures and film scenes, facial processing, gambling tasks, and traumatic script-driven imagery [Cohen et al, 2013;Etkin and Wager, 2007;Felmingham et al, 2008;Hopper et al, 2007b;Lanius et al, 2012Lanius et al, , 2015Mickleborough et al, 2011;Reiser et al, 2014;Shin et al, 2006;van Wingen et al, 2011].…”