Adaptive emotional responding requires flexible regulatory control of autonomic response
systems, thought to involve the ventromedial prefrontal cortex (vmPFC). Individuals
with posttraumatic stress disorder (PTSD) show compromised vmPFC function and parasympathetic
tone—as reflected by reduced respiratory sinus arrhythmia (RSA)—yet previous studies
have not drawn a direct link between these deficits.
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© 2017 Published by Elsevier Inc.
