Face Stroop in Post-Traumatic Stress Disorder: Emotional Interference.
Abstract: Previous research has suggested that individuals with PTSD attend
preferentially to trauma-related emotional stimuli and have difficulty completing unrelated
concurrent tasks that involve such stimuli. Individuals with PTSD also exhibit relatively
reduced rostral anterior cingulate cortex (rACC) activation during such tasks. However,
it's not currently clear if rACC hyporesponsivity ... read morecan be demonstrated in emotional
interference tasks involving trauma-unrelated emotional stimuli. We hypothesized that the
rACC would be hyporesponsive in patients with PTSD, compared to trauma exposed non-PTSD
(TENP) participants, during interference from trauma-unrelated emotional stimuli. To test
this we employed the Face Stroop task, which elicits an rACC BOLD response during emotional
interference in healthy subjects. In comparing 17 individuals with PTSD to 18 TENP
participants we found relatively diminished rACC BOLD responsivity in the PTSD group during
the Incongruent (versus Congruent) condition of the Face Stroop. In this same contrast,
there were no between-group differences in response times or error rates. Overall, this
supports our hypothesis that patients with PTSD exhibit rACC hyporesponsivity during
interference from trauma-unrelated emotional stimuli.
Thesis (M.S.)--Tufts University, 2011.
Submitted to the Dept. of Psychology.
Advisor: Lisa Shin.
Committee: Heather Urry, and Mohammed Milad.
Keyword: Psychology.read less