Rapid emotional processing in relation to trauma-related symptoms as revealed by magnetic source imaging.

ABSTRACT:

Background

Traumatic stress leads to functional reorganization in the brain and may trigger an alarm response. However, when the traumatic event produces severe helplessness, the predominant peri-traumatic response may instead be marked by a dissociative shutdown reaction. The neural correlates of this dissociative shutdown were investigated by presenting rapidly presented affective pictures to female participants with posttraumatic stress disorder (PTSD), and comparing responses to a Non-PTSD control group.

Methods

Event-related-magnetic-fields were recorded during rapid visual serial presentation of emotionally arousing stimuli (unpleasant or pleasant), which alternated with pictures with low affective content (neutral). Neural sources, based on the L2-surface-minimum-norm

SUBMITTER: Schalinski I 

PROVIDER: S-EPMC4100056 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature