Yale Child Study Center, Yale University School of Medicine , New Haven, CT, USA.
Haskins Laboratories, Yale University , New Haven, CT, USA.
Soc Neurosci. 2020 Dec;15(6):650-654. doi: 10.1080/17470919.2020.1847729. Epub 2020 Nov 23.
Infant-cue processing facilitates sensitive maternal care, which is necessary in the formation of healthy mother-infant attachment. Mothers may be particularly focused on cue processing early postpartum, contributing to intense preoccupation with their infant's well-being. Prior reproductive experience, or parity, may also impact the intensity of infant-cue processing and has been found to influence P300 neural responses to infant faces during pregnancy and at 2 months postpartum. However, we do not know whether this parity effect persists. Thus, we examined the P300 to infant faces in 59 mothers at 2 and 7 months postpartum. Our main finding was that primiparous, as compared to multiparous, women showed a significantly higher P300 to infant faces across the postpartum period. Findings further emphasize the importance of studying parity and its impact on the neural processing of infant faces.
婴儿线索处理促进了敏感的母婴护理，这对于形成健康的母婴依恋是必要的。母亲在产后早期可能特别关注线索处理，这导致她们过度关注婴儿的健康。先前的生育经验或产次也可能影响婴儿线索处理的强度，并已发现其影响怀孕和产后 2 个月时对婴儿面孔的 P300 神经反应。然而，我们不知道这种产次效应是否持续存在。因此，我们在产后 2 个月和 7 个月时检查了 59 名母亲的婴儿面孔 P300。我们的主要发现是，与多产妇相比，初产妇在整个产后期间对婴儿面孔的 P300 反应明显更高。这些发现进一步强调了研究产次及其对婴儿面孔神经处理影响的重要性。
