Neonatal learnibg Ability and Mechanism of mother-Infant Relationship Based on Fetal Memory

本研究以出生2天的SIC：ICR小鼠为研究对象，进行了一系列胎儿记忆和学习的实验，以探讨胎儿记忆与新生儿学习能力和母婴结合的关系。他们被测试了对母亲乳头的偏好，乳头上覆盖着味道/气味刺激(羊水和盐水)，以及他们自己的母亲。在刺激偏好测试中，新生的幼崽首先与自己的母亲分开饥饿三个小时，然后接受测试。在母亲用Nembutal麻醉后，一只幼崽被放在她的面前。在母性偏爱实验中，母鼠的母体和外源母体同时使用Nembutal进行麻醉。然后将一只幼崽放在它们之间。幼崽更喜欢被羊水覆盖的乳头，以及它们自己的母亲。这些结果表明，2日龄新生幼崽记住了它们在胎儿期经历的羊水特征，它们根据记忆来选择自己的母亲，并且它们在出生后记住了自己母亲的刺激特征。

This study was conducted as a series of experiments in fetal memory and learning in order to investigate the relationship between fetal memory and learning ability of the newborn, and mother-infant bond.The 2-day-old newborns of SIc : ICR mice were used as subjects. they were tested the preference to the mother's nipple, with which the taste/odor stimulus (amniotic fluid and saline) was coated, and their own mother. In stimulus preference test, newborn pups were first separated to their own mother for three hours for hunger then subjected to the test. After the mother was anesthetized with nembutal, a pup was placed in front of her. In maternal preference test, own mother of pups and alien mother were anesthtized with nembutal simultaneously. Then a pup was placed between them.The pups preferred the nipple which was coated with amniotic fluid, and their own mother. These results indicate that the 2-day-old newborn pups remember the characteristics of amniotic fluid which they experienced in the wonb in fetal period, that they choose their mother based on the memory, and that they remember the stimulus characteristics of their own mother after birth.