The influence of cognitive load on maternal postural sway and heart rate in response to infant vocalizations
The influence of cognitive load on maternal postural sway and heart rate in response to infant vocalizations
复制标题
认知负荷对母亲响应婴儿发声的姿势摇摆和心率的影响
DOI：
10.1002/dev.21961
复制
发表时间：
2020
影响因子：
2.2
通讯作者：
Nomura Michio
中科院分区：
文献类型：
--
作者：
Hiraoka Daiki;Nomura Michio
婴儿通过哭和笑向他们的照顾者传达他们的情绪。最近的研究表明，适应性养育需要对婴儿信号的直觉行为进行认知调节。在这项研究中，我们研究了认知调节对母亲对婴儿哭和笑的无意识行为和心脏反应的影响。共有55位母亲参加了这项研究。为了控制认知负荷，母亲被要求记住字母字符（低认知负荷条件下两个字母，高认知负荷条件下八个字母）。然后，他们听到婴儿的声音（哭或笑）6秒。在此期间，我们测量了母亲的行为（压力中心，接近-回避行为的指数）和生理（心率）反应。不管发声类型（婴儿哭或笑），高认知负荷增加了母亲对婴儿声音的向前移动以及母亲的心率。这些发现推进了我们对执行功能和母亲对婴儿信号的反应之间联系的理解，这是通过在需要认知资源的记忆任务中利用母亲反应的姿势和生理措施来实现的。
Infants communicate their emotions to their caregivers through cries and laughter. Recent work suggests that adaptive parenting requires cognitive regulation of intuitive behaviors toward infants’ signals. In this study, we examined the effects of cognitive regulation on mothers’ unconscious behavioral and cardiac responses to infant cries and laughs. In all, 55 mothers took part in this study. To manipulate cognitive load, mothers were asked to memorize alphabet characters (two letters in the low cognitive load condition and eight in the high cognitive load condition). Then, they heard infant vocalizations (cries or laughs) for 6 s. During this time, we measured mothers’ behavioral (center of pressure, an index of approach–avoidance behavior) and physiological (heart rate) responses. Regardless of vocalization type (infant cries or laughs), high cognitive load increased mothers’ forward movement toward the infant sounds as well as mothers’ heart rate. These findings advance our understanding of the link between executive function and maternal response to infant signals by utilizing postural and physiological measures of maternal response during memory tasks that require cognitive resources.