PDF(Pubmed)
Abstract：
Throughout pregnancy, fetuses are exposed to a range of chemosensory inputs influencing their postnatal behaviors. Such prenatal exposure provides the fetus with continuous sensory information to adapt to the environment they face once born. This study aimed to assess the chemosensory continuity through a systematic review and meta-analysis of existing evidence on chemosensory continuity from prenatal to first postnatal year. Web of Science Core. Collections, MEDLINE, PsycINFO, EBSCOhost ebook collection was searched from 1900 to 2021. Studies identified from the search were grouped according to type of stimuli the fetuses were exposed to prenatally that the neonatal infants\' responses to were being evaluated, namely flavors transferred from the maternal diet, and the odor of their own amniotic fluid. Of the 12 studies that met the eligibility criteria for inclusion (k = 6, k = 6, respectively in the first and the second group of studies), and eight studies (k = 4, k = 4, respectively) provided sufficient data suitable for meta-analysis. Infants, during their first year of life, oriented their heads for significantly longer durations in the direction of the prenatally experienced stimuli with large pooled effect sizes (flavor stimuli, d = 1.24, 95% CI [0.56, 1.91]; amniotic fluid odor, d = 0.853; 95% CI [.632, 1.073]). The pooled effect size for the duration of mouthing behavior was significant in response to prenatal flavor exposure through maternal diet (d = 0.72; 95% CI [0.306, 1.136]), but not for the frequency of negative facial expressions (d = -0.87, 95% CI [-2.39, 0.66]). Postnatal evidence suggests that there is a chemosensory continuity from fetal to the first year of postnatal life.
摘要：
在整个怀孕期间,胎儿暴露于一系列影响其产后行为的化学感应输入。这种产前暴露为胎儿提供了连续的感官信息，以适应他们出生后所面临的环境。这项研究旨在通过对从产前到出生后第一年的化学感觉连续性的现有证据进行系统评价和荟萃分析来评估化学感觉连续性。WebofScience核心。收藏,MEDLINE,PsycINFO,从1900年到2021年搜索了EBSCOhost电子书收藏。从搜索中确定的研究根据胎儿在产前暴露于的刺激类型进行分组，新生儿对这些刺激的反应正在进行评估。即从母体饮食中转移出来的味道，和自己羊水的气味。在符合纳入资格标准的12项研究中（第一组和第二组研究分别为k=6，k=6），8项研究（分别为k=4，k=4）提供了适合荟萃分析的足够数据。婴儿,在他们生命的第一年，使他们的头部朝着产前经历的刺激方向持续更长的持续时间，这些刺激具有大的汇集效应大小（风味刺激，d=1.24，95%CI[0.56，1.91]；羊水气味，d=0.853；95%CI[.632，1.073]）。对于通过母体饮食的产前风味暴露，口腔行为持续时间的合并效应大小显着（d=0.72；95％CI[0.306，1.136]），但不是针对负面面部表情的频率(d=-0.87，95%CI[-2.39，0.66])。出生后的证据表明，从胎儿到出生后的第一年存在化学感应连续性。
