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儿童期虐待后非典型前额叶-杏仁核回路:与青少年精神病理学的关联。

Atypical Prefrontal-Amygdala Circuitry Following Childhood Exposure to Abuse: Links With Adolescent Psychopathology.

机构信息

Department of Psychology, University of Washington, Seattle, WA, USA.

Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

出版信息

Child Maltreat. 2019 Nov;24(4):411-423. doi: 10.1177/1077559519852676. Epub 2019 May 30.

Abstract

Adverse childhood experiences have been associated with more negative coupling between the ventromedial prefrontal cortex (vmPFC) and amygdala, a brain network involved in emotion regulation in both children and adults. This pattern may be particularly likely to emerge in individuals exposed to threatening experiences during childhood (e.g., exposure to child abuse), although this has not been examined in prior research. We collected functional magnetic resonance imaging data on 57 adolescents during an emotion regulation task. Greater negative functional connectivity between vmPFC and amygdala occurred during viewing of negative compared to neutral images. This vmPFC-amygdala task-related functional connectivity was more negative in adolescents exposed to physical, sexual, or emotional abuse than those without a history of maltreatment and was associated with abuse severity. This pattern of more negative functional connectivity was associated with higher levels of externalizing psychopathology concurrently and 2 years later. Greater negative connectivity in the vmPFC-amygdala network during passive viewing of negative images may reflect disengagement of regulatory responses from vmPFC in situations eliciting strong amygdala reactivity, potentially due to stronger appraisals of threat in children exposed to early threatening environments. This pattern may be adaptive in the short term but place adolescents at higher risk of psychopathology later in life.

摘要

童年逆境与腹内侧前额叶皮层(vmPFC)和杏仁核之间更负向的耦合有关,杏仁核是一个涉及儿童和成人情绪调节的大脑网络。这种模式在儿童期经历过威胁性经历(例如,遭受虐待)的个体中可能特别容易出现,尽管这在之前的研究中尚未得到检验。我们在一项情绪调节任务中收集了 57 名青少年的功能磁共振成像数据。与中性图像相比,在观看负面图像时,vmPFC 和杏仁核之间的负向功能连接更强。与没有虐待史的青少年相比,经历过身体、性或情感虐待的青少年 vmPFC-杏仁核任务相关功能连接更为负向,并且与虐待的严重程度相关。这种负向功能连接更强的模式与同时期和 2 年后更高水平的外化精神病理学有关。在消极图像的被动观看过程中,vmPFC-杏仁核网络中的负向连接增加,可能反映了在引发强烈杏仁核反应的情况下,vmPFC 对调节反应的脱钩,这可能是由于早期威胁环境中的儿童对威胁的评估更为强烈。这种模式在短期内可能是适应性的,但会使青少年在以后的生活中面临更高的精神病理学风险。

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