School of Family Life/Neuroscience Center, Brigham Young University, USA.
College of Family, Home and Social Sciences, Brigham Young University, USA.
Infant Behav Dev. 2022 May;67:101708. doi: 10.1016/j.infbeh.2022.101708. Epub 2022 Mar 9.
Using Porges' (2011) Polyvagal Theory as a backdrop, this study examined whether changes in parasympathetic functioning, as indexed by baseline measures of cardiac vagal tone at 6, 9, and 12 months of age, were linked to changes in infants' (N = 101) dyadic co-regulation over these same time points. Mothers and infants were observed at each time point during a 15-minute unstructured free-play and co-regulated patterns of interactions were coded using the Revised Relational Coding System (Fogel et al., 2003). Analyses were carried out using multi-process growth curve modeling to examine baseline measurements (intercepts) and changes (slopes) in vagal tone, co-regulation as well as mothers' report of infant temperament. Findings demonstrate links between infants' vagal tone and changes in mother-infant co-regulation. Specifically, increasing levels of cardiac vagal tone was related to increases in symmetrical but decreases in unilateral patterns of co-regulation over time. These findings suggest that changes in the autonomic nervous system likely undergird infants' improving capacity to engage in more mutually sustained patterns of co-regulation.
本研究以 Porges（2011）的多迷走神经理论为背景，探讨了婴儿 6、9 和 12 个月时的心脏迷走神经张力基线测量值变化是否与同期婴儿的二元调节变化有关。在每个时间点，母亲和婴儿都会在 15 分钟的无结构自由游戏中被观察，使用修订后的关系编码系统（Fogel 等人，2003 年）对互动的调节模式进行编码。使用多过程增长曲线建模来分析迷走神经张力、调节以及母亲报告的婴儿气质的基线测量值（截距）和变化（斜率）。研究结果表明，婴儿迷走神经张力与母婴调节变化之间存在关联。具体来说，心脏迷走神经张力的增加与对称性调节模式的增加有关，但随着时间的推移，单侧调节模式的减少有关。这些发现表明，自主神经系统的变化可能支持婴儿提高参与更相互持续的调节模式的能力。
