Literature DB >> 35730162

Persistent Dissociation and Its Neural Correlates in Predicting Outcomes After Trauma Exposure.

Lauren A M Lebois1, Nathaniel G Harnett1, Sanne J H van Rooij1, Timothy D Ely1, Tanja Jovanovic1, Steven E Bruce1, Stacey L House1, Caitlin Ravichandran1, Nathalie M Dumornay1, Katherine E Finegold1, Sarah B Hill1, Julia B Merker1, Karlye A Phillips1, Francesca L Beaudoin1, Xinming An1, Thomas C Neylan1, Gari D Clifford1, Sarah D Linnstaedt1, Laura T Germine1, Scott L Rauch1, John P Haran1, Alan B Storrow1, Christopher Lewandowski1, Paul I Musey1, Phyllis L Hendry1, Sophia Sheikh1, Christopher W Jones1, Brittany E Punches1, Robert A Swor1, Meghan E McGrath1, Lauren A Hudak1, Jose L Pascual1, Mark J Seamon1, Elizabeth M Datner1, Anna M Chang1, Claire Pearson1, Robert M Domeier1, Niels K Rathlev1, Brian J O'Neil1, Paulina Sergot1, Leon D Sanchez1, Mark W Miller1, Robert H Pietrzak1, Jutta Joormann1, Deanna M Barch1, Diego A Pizzagalli1, John F Sheridan1, Jordan W Smoller1, Beatriz Luna1, Steven E Harte1, James M Elliott1, Ronald C Kessler1, Karestan C Koenen1, Samuel A McLean1, Jennifer S Stevens1, Kerry J Ressler1.   

Abstract

OBJECTIVE: Dissociation, a disruption or discontinuity in psychological functioning, is often linked with worse psychiatric symptoms; however, the prognostic value of dissociation after trauma is inconsistent. Determining whether trauma-related dissociation is uniquely predictive of later outcomes would enable early identification of at-risk trauma populations. The authors conducted the largest prospective longitudinal biomarker study of persistent dissociation to date to determine its predictive capacity for adverse psychiatric outcomes following acute trauma.
METHODS: All data were part of the Freeze 2 data release from the Advancing Understanding of Recovery After Trauma (AURORA) study. Study participants provided self-report data about persistent derealization (N=1,464), a severe type of dissociation, and completed a functional MRI emotion reactivity task and resting-state scan 2 weeks posttrauma (N=145). Three-month follow-up reports were collected of posttraumatic stress, depression, pain, anxiety symptoms, and functional impairment.
RESULTS: Derealization was associated with increased ventromedial prefrontal cortex (vmPFC) activation in the emotion reactivity task and decreased resting-state vmPFC connectivity with the cerebellum and orbitofrontal cortex. In separate analyses, brain-based and self-report measures of persistent derealization at 2 weeks predicted worse 3-month posttraumatic stress symptoms, distinct from the effects of childhood maltreatment history and current posttraumatic stress symptoms.
CONCLUSIONS: The findings suggest that persistent derealization is both an early psychological and biological marker of worse later psychiatric outcomes. The neural correlates of trauma-related dissociation may serve as potential targets for treatment engagement to prevent posttraumatic stress disorder. These results underscore dissociation assessment as crucial following trauma exposure to identify at-risk individuals, and they highlight an unmet clinical need for tailored early interventions.

Entities:  

Keywords:  Biological Markers; Depersonalization/Derealization; Dissociative Disorders; Neuroimaging; Posttraumatic Stress Disorder (PTSD)

Mesh:

Year:  2022        PMID: 35730162      PMCID: PMC9444876          DOI: 10.1176/appi.ajp.21090911

Source DB:  PubMed          Journal:  Am J Psychiatry        ISSN: 0002-953X            Impact factor:   19.242


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