alexa Superior Parietal Volume in Adolescents with a History of Trauma

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Superior Parietal Volume in Adolescents with a History of Trauma

There is evidence that childhood trauma exposure may affect brain structure differently at various stages of development, both in terms of time of exposure and period of brain development. Specifically, diminished corpus callosum volume is described in both children and adults with early childhood trauma exposure, while reduced hippocampal volume compared with healthy controls has been found in adults with a history of childhood trauma who had post-traumatic stress disorder, and in adolescents with depression and early life adversity, but not in traumatized children. Bilateral lateral occipital gyrus volume reduction was shown in young adults (age M=21.8, SD=2.4) who witnessed domestic violence in childhood compared with healthy controls. Evoked neuromagnetic hyperactivation of the superior parietal lobe in response to aversive stimuli was observed in participants with PTSD after torture and war exposure, and patients with PTSD showed increased regional blood flow to the right superior parietal lobe during resting state compared with healthy controls.

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