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Cortical Thickness in Dutch Police Officers: An Examination of Factors Associated with Resilience.

Authors
  • Setroikromo, Santoucha N W1, 2
  • Bauduin, Stephanie E E C1, 2
  • Reesen, Joyce E1
  • van der Werff, Steven J A1, 2
  • Smit, Annika S3
  • Vermetten, Eric1
  • van der Wee, Nic J A1, 2
  • 1 Department of Psychiatry, Leiden University Medical Center, Leiden, The Netherlands. , (Netherlands)
  • 2 Leiden Institute for Brain and Cognition, Leiden, the Netherlands. , (Netherlands)
  • 3 Dutch Police Academy, Apeldoorn, the Netherlands. , (Netherlands)
Type
Published Article
Journal
Journal of Traumatic Stress
Publisher
Wiley (John Wiley & Sons)
Publication Date
Apr 01, 2020
Volume
33
Issue
2
Pages
181–189
Identifiers
DOI: 10.1002/jts.22494
PMID: 32162369
Source
Medline
Language
English
License
Unknown

Abstract

Previous neuroimaging studies on resilience have generally compared resilience and psychopathology after stress exposure, which does not allow for conclusions regarding correlates specific to resilience. The aim of the present study was to investigate resilience-specific correlates in cortical thickness and/or cortical surface area and their correlations with psychometric measurements, using a three-group design that included a non-trauma-exposed control group in order to disentangle effects related to resilience from those related to psychopathology. Structural magnetic resonance imaging scans were acquired from 82 Dutch police officers. Participants were categorized into resilient (n = 31; trauma exposure, no psychopathology), vulnerable (n = 32; trauma exposure, psychopathology), and control groups (n = 19; no trauma exposure, no psychopathology). Specific regions of interest (ROIs) were identified based on previous studies that found the rostral and caudal anterior cingulate cortex (ACC) to be implicated in trauma-related psychopathology. Cortical thickness and surface area of the ROIs-the rostral and caudal ACC-and of the whole brain were examined. No significant differences in cortical thickness or surface area were found between the resilient group and other groups in the ROI and whole-brain analyses. Thus, the results of the present study provide no evidence of an association between resilience to traumatic stress and measures of thickness and surface area in cortical regions of the brain in a sample of Dutch police officers. © 2020 The Authors. Journal of Traumatic Stress published by Wiley Periodicals, Inc. on behalf of International Society for Traumatic Stress Studies.

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