Healthy women with severe early life trauma show altered neural facilitation of emotion inhibition under acute stress
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Zusammenfassung
Background
Across psychopathologies, trauma-exposed individuals suffer from difficulties in inhibiting emotions and regulating attention. In trauma-exposed individuals without psychopathology, only subtle alterations of neural activity involved in regulating emotions have been reported. It remains unclear how these neural systems react to demanding environments, when acute (non-traumatic but ordinary) stress serves to perturbate the system. Moreover, associations with subthreshold clinical symptoms are poorly understood.
Methods
The present fMRI study investigated response inhibition of emotional faces before and after psychosocial stress situations. Specifically, it compared 25 women (mean age 31.5 ± 9.7 years) who had suffered severe early life trauma but who did not have a history of or current psychiatric disorder, with 25 age- and education-matched trauma-naïve women.
Results
Under stress, response inhibition related to fearful faces was reduced in both groups. Compared to controls, trauma-exposed women showed decreased left inferior frontal gyrus (IFG) activation under stress when inhibiting responses to fearful faces, while activation of the right anterior insula was slightly increased. Also, groups differed in brain–behaviour correlations. Whereas stress-induced false alarm rates on fearful stimuli negatively correlated with stress-induced IFG signal in controls, in trauma-exposed participants, they positively correlated with stress-induced insula activation.
Conclusion
Neural facilitation of emotion inhibition during stress appears to be altered in trauma-exposed women, even without a history of or current psychopathology. Decreased activation of the IFG in concert with heightened bottom-up salience of fear related cues may increase vulnerability to stress-related diseases.
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GOLDE, Sabrina, Katja WINGENFELD, Antje RIEPENHAUSEN, Nina SCHRÖTER, Juliane FLEISCHER, Jens C. PRUESSNER, Simone GRIMM, Yan FAN, Julian HELLMANN-REGEN, Anne BECK, Stefan M. GOLD, Christian OTTE, 2020. Healthy women with severe early life trauma show altered neural facilitation of emotion inhibition under acute stress. In: Psychological medicine. Cambridge University Press. 2020, 50(12), pp. 2075-2084. ISSN 0033-2917. eISSN 1469-8978. Available under: doi: 10.1017/S0033291719002198BibTex
@article{Golde2020-09Healt-46813, year={2020}, doi={10.1017/S0033291719002198}, title={Healthy women with severe early life trauma show altered neural facilitation of emotion inhibition under acute stress}, number={12}, volume={50}, issn={0033-2917}, journal={Psychological medicine}, pages={2075--2084}, author={Golde, Sabrina and Wingenfeld, Katja and Riepenhausen, Antje and Schröter, Nina and Fleischer, Juliane and Pruessner, Jens C. and Grimm, Simone and Fan, Yan and Hellmann-Regen, Julian and Beck, Anne and Gold, Stefan M. and Otte, Christian} }
RDF
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