Face processing in mothers is linked to mother-infant social communication, which is critical for parenting and in turn for child development. Neuroimaging studies of child maltreatment-exposed (CME) mothers are sparse compared to studies of mothers with postpartum depression, which have suggested blunted amygdala reactivity to infant stimuli. We expected to see a similar pattern in CME mothers. Based on broader studies in trauma-exposed populations, we anticipated increased amygdala reactivity to negative adult face stimuli in a comparison task in CME mothers given heightened evaluation of potential threat. We examined Neuroimaging studies of mothers with childhood maltreatment exposure (CME) (18-37 years old), who performed infant (N = 45) and/or adult (N = 46) face processing tasks. CME mothers exhibited blunted bilateral amygdala reactivity to infant faces. There was no between-group difference in amygdala reactivity to adult faces. In infant and adult face processing tasks regardless of CME, superior temporal gyrus activation was increased for negative-valence stimuli. Our preliminary findings suggest that childhood maltreatment alters maternal processing of infant social cues, a critical skill impacting infant socioemotional development.

译文

:母亲的脸部处理与母婴社会沟通有关,这对于养育子女和继而对孩子的成长至关重要。与对产后抑郁症母亲的研究相比,对遭受儿童虐待的母亲的神经影像学研究稀疏,这表明杏仁核对婴儿刺激的反应性减弱。我们希望在继续医学教育的母亲中看到类似的情况。根据对遭受创伤的人群进行的更广泛研究,我们预期在CME母亲的一项比较任务中,随着对潜在威胁的评估提高,杏仁核对成年面部负刺激的反应性会增加。我们检查了患有儿童虐待(CME)(18-37岁)的母亲的神经影像学研究,这些母亲执行了婴儿(N = 45)和/或成人(N = 46)的面部处理任务。芝商所的母亲表现出对婴儿脸的双侧杏仁核反应迟钝。杏仁核对成年面部的反应性没有组间差异。在不考虑CME的婴儿和成人面部处理任务中,针对负价刺激增加了上颞颞回激活。我们的初步发现表明,儿童期虐待改变了母亲对婴儿社交线索的处理,这是影响婴儿社会情感发展的一项关键技能。

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