| Literature DB >> 560717 |
A Amsel, C C Radek, M Graham, R Letz.
Abstract
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.Entities:
Mesh:
Year: 1977 PMID: 560717 DOI: 10.1126/science.560717
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728