In studies using fMRI, how did post-traumatic stress disorder (PTSD) participants who report primarily dissociative (numbing-type) responses to listening to scripts about their traumas compare to PTSD participants who experienced primarily hyperarousal patterns to trauma scripts?

Question

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Studies using fMRI have shown that participants with PTSD who report primarily dissociative responses show very different patterns of brain activation compared to those who experience primarily hyperarousal patterns. The dissociative response group showed less activity in the ventromedial prefrontal cortex and amygdala, which are associated with emotional regulation, while showing increased activity in the dorsal prefrontal cortex, which is associated with cognitive control. On the other hand, the hyperarousal response group showed increased activity in the amygdala and insula, which are associated with emotional processing and reactivity.

In Studies Using FMRI, How Did Post-Traumatic Stress Disorder (PTSD)