Emotional valence modulates the topology of the parent-infant inter-brain network
Emotional valence modulates the topology of the parent-infant inter-brain network
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DOI：
10.1016/j.neuroimage.2019.116341
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发表时间：
2020-02-15
期刊：
影响因子：
5.7
通讯作者：
Leong, Victoria
中科院分区：
文献类型：
--
作者：
Santamaria, Lorena;Noreika, Valdas;Leong, Victoria
父母和孩子之间的情感交流在早期生活中至关重要，但对其神经基础知之甚少。在这里，我们采用双重连接的方法来评估积极和消极的情绪如何调节婴儿和他们的母亲之间的人际神经网络在自然的互动。15位母亲被要求在与婴儿（平均年龄10.3个月）的社会互动过程中对成对的物体产生积极和消极的情绪，同时使用双脑电图（EEG）测量母亲和婴儿的神经活动。使用定向（部分定向相干性，PDC）和非定向（锁相值，PLV）连接性度量计算母亲表达积极和消极情绪期间6-9 Hz范围（即婴儿阿尔法带）的脑内和脑间网络连接性。图形理论的措施被用来量化网络拓扑结构的情感效价的函数的差异。我们发现，脑间网络指数（密度，强度和可分性）一致显示强烈的影响，情绪效价的亲子神经网络。父母和孩子表现出更强的整合，他们的神经过程中，母亲的示范积极的情绪比消极的情绪。此外，定向脑间指标（PDC）表明，母亲对婴儿的定向影响更强的表达积极的情绪状态比消极的。这些结果表明，父母-婴儿间的脑网络调制的情感质量和语气的二元社会互动，和脑间图的指标可以成功地应用于检查这些变化的父母-婴儿间的脑网络拓扑结构。
Emotional communication between parents and children is crucial during early life, yet little is known about its neural underpinnings. Here, we adopt a dual connectivity approach to assess how positive and negative emotions modulate the interpersonal neural network between infants and their mothers during naturalistic interaction. Fifteen mothers were asked to model positive and negative emotions toward pairs of objects during social interaction with their infants (mean age 10.3 months) whilst the neural activity of both mothers and infants was concurrently measured using dual electroencephalography (EEG). Intra-brain and inter-brain network connectivity in the 6-9 Hz range (i.e. infant Alpha band) during maternal expression of positive and negative emotions was computed using directed (partial directed coherence, PDC) and non-directed (phase-locking value, PLV) connectivity metrics. Graph theoretical measures were used to quantify differences in network topology as a function of emotional valence. We found that inter-brain network indices (Density, Strength and Divisibility) consistently revealed strong effects of emotional valence on the parent-child neural network. Parents and children showed stronger integration of their neural processes during maternal demonstrations of positive than negative emotions. Further, directed inter-brain metrics (PDC) indicated that mother to infant directional influences were stronger during the expression of positive than negative emotional states. These results suggest that the parent-infant inter-brain network is modulated by the emotional quality and tone of dyadic social interactions, and that inter-brain graph metrics may be successfully applied to examine these changes in parent-infant inter-brain network topology.