Brain functional and volumetric analyses post traumatic stress disorder treated by EMDR
Neuro-imaging investigations in PTSD have reported findings for either functional or structural modifications. Only two studies have investigated the changes in cerebral blood flow (CBF) following EMDR therapy and one single-patient study recently reported EMDR-related structural changes. The aim of this study was to analyse the structural and functional changes occurring in brain regions implicated in the patho-physiology of PTSD along with the impact on CBF and volumetric data after EMDR treatment. Thirty six train drivers having being exposed to traumatic experiences at work were assigned to different two groups: symptomatic (S, n=17) or nonsymptomatic (NS, n=19), according to PTSD diagnosis. SPECT, following administration of an individualised 35 trauma script, and MRI were performed and EMDR therapy was administered to S. According to EMDR outcome S were further subdivided in responders (R, n=11) and non-responders (NS, n=5). One patient was not treated. CBF and volumetric analyses were performed on temporal lobes, hippocampi and nuclei caudati. ANOVA showed a significantly higher CBF distribution in the left temporal lobe of S as compared to NS and the right nc.caudatus was significantly larger in S. The R group had larger hippocampi and nc.caudati as compared to NR and the size of hippocampi correctly identified 81% of R and NR. The increased left temporal lobe CBF distribution among symptomatic PTSD subjects may reflect the affective significance of higher effort in emotional episodic memory stimulation among symptomatic individuals. Hippocampi volume as measured before EMDR was shown to predict with high accuracy the therapy outcome.
Original Work Citation
Pagani, M., Salmaso, D., Looi, J., & Hogberg, G. (2008, June). Brain functional and volumetric analyses post traumatic stress disorder treated by EMDR. Presentation at the 9th EMDR Europe Association Conference, London, England
“Brain functional and volumetric analyses post traumatic stress disorder treated by EMDR,” Francine Shapiro Library, accessed April 7, 2020, https://emdria.omeka.net/items/show/18264.