Oscillatory magnetic brain activity is related to dissociative symptoms and childhood adversities – A study in women with multiple trauma
| Autor: | Christian Wienbruch, James K. Moran, Vanessa Reindl, Inga Schalinski, Thomas Elbert |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
medicine.medical_specialty medicine.drug_class Comorbidity Dissociative Disorders Dissociative Stress Disorders Post-Traumatic 03 medical and health sciences 0302 clinical medicine medicine Humans Dissociative disorders Psychiatry Psychopathology medicine.diagnostic_test Resting state fMRI Depression Multiple Trauma Traumatic stress Brain Magnetoencephalography Middle Aged medicine.disease 030227 psychiatry Psychiatry and Mental health Clinical Psychology Adult Survivors of Child Adverse Events Sexual abuse Female Psychology 030217 neurology & neurosurgery Clinical psychology |
| Zdroj: | Journal of Affective Disorders. 218:428-436 |
| ISSN: | 0165-0327 |
| DOI: | 10.1016/j.jad.2017.05.009 |
| Popis: | Background Individuals with trauma-related disorders are complex and heterogeneous; part of this complexity derives from additional psychopathology like dissociation as well as environmental adversities such as traumatic stress, experienced throughout the lifespan. Understanding the neurophysiological abnormalities in Post-traumatic stress disorder (PTSD) requires a simultaneous consideration of these factors. Methods Resting state magnetoencephalography (MEG) recordings were obtained from 41 women with PTSD and comorbid depressive symptoms, and 16 healthy women. Oscillatory brain activity was extracted for five frequency bands and 11 source locations, and analyzed in relation to shutdown dissociation and adversity-related measures. Results Dissociative symptoms were related to increased delta and lowered beta power. Adversity-related measures modulated theta and alpha oscillatory power (in particular childhood sexual abuse) and differed between patients and controls. Limitations Findings are based on women with comorbid depressive symptoms and therefore may not be applicable for men or groups with other clinical profiles. In respect to childhood adversities, we had no reliable source for the early infancy. Conclusion Trauma-related abnormalities in neural organization vary with both exposure to adversities as well as their potential to evoke ongoing shutdown responses. |
| Databáze: | OpenAIRE |
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