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首页> 外文期刊>Chemical Senses >Post-oral and Perioral Stimulations during Nursing Enhance Appetitive Olfactory Memory in Neonatal Rabbits
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Post-oral and Perioral Stimulations during Nursing Enhance Appetitive Olfactory Memory in Neonatal Rabbits

机译:护理过程中的口腔和围口刺激增强了新生兔的嗅觉记忆。

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Nursing-suckling interactions facilitate olfactory learning in newborns as long as suckling and the olfactory stimulus temporally overlap. We tested the hypothesis that olfactory preferences would develop even with a long delay between odor presentation and nursing. Thyme was presented to 2-day-old rabbit pups by placing an odorized plate 2 cm above their nest box. Duration and time of nursing were controlled and occurred before, during, or after odor presentation. Controls were not nursed. When exposed to the odor for 15 min, control pups preferred thyme to a novel odor in a 2-choice test immediately after exposure but not 3 and 22 h later. When pups were nursed immediately before thyme exposure or during exposure, they preferred the familiar odorant until 22 h later. Identically, when nursing occurred 30 min before odor exposure, a preference for thyme was maintained up to 22 h. This was not observed when nursing occurred 60 min before odor presentation. We concluded that enhancement of olfactory memory occurs in neonates during nursing but also after post-oral stimulation by postprandial internal state.
机译:只要哺乳和嗅觉刺激在时间上重叠,哺乳-哺乳互动就可以促进新生儿的嗅觉学习。我们检验了这样的假设:即使在气味表现和护理之间有较长的延迟,也会产生嗅觉偏好。将百里香放在巢箱上方2厘米处,放置在2天大的幼兔身上。控制护理的时间和时间,并在气味出现之前,期间或之后进行。对照没有调养。当暴露在气味中15分钟后,对照幼犬在暴露后立即进行2-choice测试中将百里香比新的气味更喜欢,但3和22小时后则不然。当在暴露百里香之前或暴露期间对幼仔进行护理时,它们会选择熟悉的气味直到22小时后。同样,当在气味接触前30分钟进行护理时,对百里香的偏好可维持至22小时。在气味出现前60分钟进行护理时未观察到这一点。我们得出的结论是,婴儿的嗅觉记忆增强发生在护理期间,而且在餐后内部状态引起的口腔后刺激之后也是如此。

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