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Childhood Poverty Predicts Adult Amygdala and Frontal Activity and Connectivity in Response to Emotional Faces

机译:童年贫困预测成人杏仁核和正面活动和连接性以应对情感表情

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摘要

Childhood poverty negatively impacts physical and mental health in adulthood. Altered brain development in response to social and environmental factors associated with poverty likely contributes to this effect, engendering maladaptive patterns of social attribution and/or elevated physiological stress. In this fMRI study, we examined the association between childhood poverty and neural processing of social signals (i.e., emotional faces) in adulthood. Fifty-two subjects from a longitudinal prospective study recruited as children, participated in a brain imaging study at 23–25 years of age using the Emotional Faces Assessment Task. Childhood poverty, independent of concurrent adult income, was associated with higher amygdala and medial prefrontal cortical (mPFC) responses to threat vs. happy faces. Also, childhood poverty was associated with decreased functional connectivity between left amygdala and mPFC. This study is unique, because it prospectively links childhood poverty to emotional processing during adulthood, suggesting a candidate neural mechanism for negative social-emotional bias. Adults who grew up poor appear to be more sensitive to social threat cues and less sensitive to positive social cues.
机译:童年贫困对成年后的身心健康有负面影响。响应与贫困相关的社会和环境因素而改变的大脑发育可能导致了这种效应,导致了社会归因的适应不良模式和/或生理压力升高。在这项功能磁共振成像研究中,我们研究了儿童期贫困与成年期社交信号(即情感面孔)的神经处理之间的关系。来自儿童的一项纵向前瞻性研究的52名受试者参加了使用情绪面孔评估任务在23-25岁之间进行的脑成像研究。童年贫困,独立于成人的并发收入,与杏仁核和内侧前额叶皮层(mPFC)对威胁对幸福面孔的反应有关。此外,儿童期贫困与左杏仁核和mPFC之间的功能连通性降低有关。这项研究是独特的,因为它可以将儿童期的贫困与成年期的情绪处理联系起来,这为消极的社会情感偏见提供了一种候选的神经机制。长大后贫穷的成年人似乎对社交威胁提示更敏感,而对积极社交提示则较不敏感。

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