POTENTIATION OF ISOLATION-INDUCED VOCALIZATION BY BRIEF EXPOSURE OF RAT PUPS TO MATERNAL CUES
POTENTIATION OF ISOLATION-INDUCED VOCALIZATION BY BRIEF EXPOSURE OF RAT PUPS TO MATERNAL CUES
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DOI：
10.1002/dev.420270804
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发表时间：
1994-12-01
影响因子：
2.2
通讯作者：
SHAIR, HN
中科院分区：
文献类型：
--
作者：
HOFER, MA;BRUNELLI, SA;SHAIR, HN
自1956年发现超声波发声（USV）以来，当幼鼠第一次被隔离在一个不熟悉的地方时，记录了最高的超声波发声率。我们现在报告说，在将幼鼠隔离之前，允许幼鼠在试验室中与其麻醉的母鼠短暂接触（1-10分钟），可以使USV峰值率加倍。隔离反应的增强对母体具有特异性，因为在与一组4只温暖、麻醉的同窝仔初次接触后未发生隔离反应。对照实验表明，增强不能归因于热对比，实验者处理，一般行为激活，新奇的母亲的线索，或护理剥夺。此外，当幼仔与饲养笼中的麻醉母体长时间接触后直接进行隔离试验时，未发生这种情况。增强作用可以理解为幼崽的叫声和/或在母婴互动中先前学习的偶然性的交流作用。(C)John Wiley & Sons，Inc.
Since their discovery in 1956, the highest rates of ultrasonic vocalization (USV) have been recorded from infant rats when first isolated in an unfamiliar place. We now report that peak USV rates can be doubled by allowing test pups a brief initial period of contact with their anesthetized dam (1-10 min) in the test chamber before isolating the pup by her removal. Potentiation of the isolation response was specific to the dam, for it failed to occur following initial contact with a group of 4 warm, anesthetized littermates. Control experiments showed that potentiation could not be attributed to thermal contrast, experimenter handling, general behavioral activation, novelty of maternal cues, or nursing deprivation. Furthermore, it did not occur when pups were taken for isolation testing directly from prolonged contact with their anesthetized dam in the home cage. Potentiation may be understood in terms of the communicative role of the pups' call and/or prior learning contingencies within the mother-infant interaction. (C) 1994 John Wiley & Sons, Inc.