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Science 19 August 1977:
Vol. 197. no. 4305, pp. 786 - 788
DOI: 10.1126/science.560717
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Articles

Science, Vol 197, Issue 4305, 786-788
Copyright © 1977 by American Association for the Advancement of Science

articles

Ultrasound emission in infant rats as an indicant of arousal during appetitive learning and extinction

A Amsel, CC Radek, M Graham, and R Letz

Infant rats rewarded for crawling by being allowed to suckle on the dry nipple of an anesthetized dam showed a decreasing rate of ultrasound production during acquisition and an increasing rate during extinction. These results suggest that infant rats can be stressed and are aroused as a result of successive nonrewards just as adult rats are. In addition, these results do not support the hypothesis that infant rats lack inhibitory mechanisms related to poorly developed neural centers.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Maturation of Extinction Behavior in Infant Rats: Large-Scale Regional Interactions with Medial Prefrontal Cortex, Orbitofrontal Cortex, and Anterior Cingulate Cortex.
H. P. Nair, J. D. Berndt, D. Barrett, and F. Gonzalez-Lima (2001)
J. Neurosci. 21, 4400-4407
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