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Potentiation and inhibition of ultrasonic vocalization of rat pups: Regulation by social cues

✍ Scribed by Harry N. Shair; Jenny R. Masmela; Susan A. Brunelli; Myron A. Hofer

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
90 KB
Volume
30
Category
Article
ISSN
0012-1630

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✦ Synopsis

-day-old rat pups were tested in isolation and in the presence of an anesthetized adult under cold conditions. Pups of both ages reduced rates of ultrasonic vocalization (USV) when an adult was placed into the test cage, independent of whether the adult was their dam or an unrelated male. However, after removal of the dam, pups greatly increased their rates of USV over their first isolation period and in comparison with control pups. USV rates remained low after removal of the male. The temperature challenges faced by the pups in the two experimental conditions were the same. These phenomena are better explained by a hypothesis that postulates USV rate as being multiply determined, including by social cues, rather than a theory that considers thermal challenge only.

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