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Neurobiological Features of Posttraumatic Stress Disorder (PTSD) and Their Role in Understanding Adaptive Behavior and Stress Resilience

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  • Felippe Toledo

    (LUNEX International University of Health, Exercise and Sports, 50 Avenue du Parc des Sports, L-4671 Differdange, Luxembourg
    Luxembourg Health and Sport Sciences Research Institute ASBL, 50 Avenue du Parc des Sports, L-4671 Differdange, Luxembourg)

  • Fraser Carson

    (LUNEX International University of Health, Exercise and Sports, 50 Avenue du Parc des Sports, L-4671 Differdange, Luxembourg
    Luxembourg Health and Sport Sciences Research Institute ASBL, 50 Avenue du Parc des Sports, L-4671 Differdange, Luxembourg)

Abstract

Posttraumatic stress disorder (PTSD) has been impacting the functioning of a large number of people in military activities and victims of violence for many generations. However, investments in research aiming to understand the neurobiological aspects of the disorder started relatively late, around the last third of the 20th century. The development of neuroimaging methods has greatly supported further understanding of the structural and functional changes in the re-organization processes of brains with PTSD. This helps to better explain the severity and evolution of behavioral symptoms, and opens the possibilities for identifying individual preexisting structural characteristics that could increase symptom severity and the risk of development. Here, we review the advances in neuroanatomical research on these adaptations in PTSD and discuss how those modifications in prefrontal and anterior cingulate circuitry impact the severity and development of the disorder, detaching the research from an amygdalocentric perspective. In addition, we investigate existing and contradictory evidence regarding the preexisting neurobiological features found mostly in twin studies and voxel-based morphometry (VBM) reports.

Suggested Citation

  • Felippe Toledo & Fraser Carson, 2022. "Neurobiological Features of Posttraumatic Stress Disorder (PTSD) and Their Role in Understanding Adaptive Behavior and Stress Resilience," IJERPH, MDPI, vol. 19(16), pages 1-14, August.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:16:p:10258-:d:891302
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    References listed on IDEAS

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    1. Jonathan Miller & Andrew J. Watrous & Melina Tsitsiklis & Sang Ah Lee & Sameer A. Sheth & Catherine A. Schevon & Elliot H. Smith & Michael R. Sperling & Ashwini Sharan & Ali Akbar Asadi-Pooya & Gregor, 2018. "Lateralized hippocampal oscillations underlie distinct aspects of human spatial memory and navigation," Nature Communications, Nature, vol. 9(1), pages 1-12, December.
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