Conditioned activation of fetal behavior.
Conditioned activation of fetal behavior.
复制标题
胎儿行为的条件激活。
DOI：
10.1016/0031-9384(91)90500-n
复制
发表时间：
1991
影响因子：
2.9
通讯作者：
Robinson,SR
中科院分区：
文献类型：
--
作者：
Smotherman,WP;Robinson,SR
以前的产前学习的演示依赖于实验方案，包括在一个胎龄的训练和测试在以后的年龄，潜在的混淆经验和保留与胎儿的行为库的发育变化的影响。在这项研究中，一个单一的会话范例，其中涉及配对的中性化学感觉刺激（蔗糖CS）与第二刺激，激活行为（柠檬美国），被用来评估的学习能力的大鼠胎儿。四CS-US配对有效地促进行为活动在20日龄的大鼠胎儿时，他们再次暴露于蔗糖CS单独。条件性行为激活在妊娠第20天的功能表达发生在CNS结构（其中许多参与老年动物的感觉处理和学习）仍在大鼠胎儿中快速分化的时候。
Previous demonstrations of prenatal learning have relied upon experimental protocols involving training at one gestational age and testing at a later age, potentially confounding effects of experience and retention with developmental changes in the fetus's behavioral repertoire. In this study, a single-session paradigm, which involved the pairing of a neutral chemosensory stimulus (sucrose CS) with a second stimulus that activates behavior (lemon US), was used to assess the learning capacity of the rat fetus. Four CS-US pairings were effective in promoting behavioral activity in 20-day-old rat fetuses when they were reexposed to the sucrose CS alone. The functional expression of conditioned behavioral activation on day 20 of gestation occurs at a time when CNS structures, many of which are involved in sensory processing and learning in older animals, are still undergoing rapid differentiation in the rat fetus.