The Dichotomy of Threat and Deprivation as Subtypes of Childhood Maltreatment: Differential Functional Connectivity Patterns of Threat and Reward Circuits in an Adult Trauma Sample.

Autor: Liuzzi MT; Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin. Electronic address: mtliuzzi@uwm.edu., Harb F; Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin., Petranu K; Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin., Huggins AA; Brain Imaging & Analysis Center, Duke University, Durham, North Carolina., Webb EK; Department of Psychiatry, Harvard Medical School, Boston, Massachusetts; Division of Depression and Anxiety, McLean Hospital, Belmont, Massachusetts., Fitzgerald JM; Department of Psychology, Marquette University, Milwaukee, Wisconsin., Krukowski JL; Department of Psychology, Marquette University, Milwaukee, Wisconsin., Miskovich TA; Kaiser Permanente North Valley, Sacramento, California., deRoon-Cassini TA; Division of Trauma and Acute Care Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin., Larson CL; Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin.
Jazyk: angličtina
Zdroj: Biological psychiatry. Cognitive neuroscience and neuroimaging [Biol Psychiatry Cogn Neurosci Neuroimaging] 2024 Feb; Vol. 9 (2), pp. 227-234. Date of Electronic Publication: 2023 Oct 21.
DOI: 10.1016/j.bpsc.2023.10.001
Abstrakt: Background: Childhood maltreatment is associated with reduced activation of the nucleus accumbens, a central region in the reward network, and overactivity in the amygdala, a key region in threat processing. However, the long-lasting impact of these associations in the context of later-life stress is not well understood. The current study explored the association between childhood threat and deprivation and functional connectivity of threat and reward regions in an adult trauma sample.
Methods: Trauma survivors (N = 169; mean age [SD] = 32.2 [10.3] years; female = 55.6%) were recruited from a level I trauma center. Two weeks after injury, participants completed the Childhood Trauma Questionnaire (measuring experiences of threat and deprivation) and underwent resting-state functional magnetic resonance imaging. Seed-to-voxel analyses evaluated the effect of childhood threat and deprivation on amygdala and nucleus accumbens resting-state connectivity.
Results: Higher levels of threat were associated with increased connectivity between the right nucleus accumbens with temporal fusiform gyrus/parahippocampal gyrus and the left amygdala and the precuneus (false discovery rate-corrected p < .05). After controlling for posttraumatic symptoms 2 weeks posttrauma and lifetime trauma exposure, only the nucleus accumbens findings survived. There were no significant relationships between experiences of childhood deprivation and amygdala or nucleus accumbens connectivity.
Conclusions: Experiences of threat are associated with increased nucleus accumbens and amygdala connectivity, which may reflect a preparedness to detect salient and visual stimuli. This may also reflect a propensity toward dysregulated reward processing. Overall, these results suggest that childhood threat may be contributing to aberrant neural baseline reward and threat sensitivity later in life in an adult trauma sample.
(Copyright © 2023 Society of Biological Psychiatry. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: