Effects of adrenal demedullation on retention of a conditioned avoidance response in the mouse.

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Abstract
Mice were trained to avoid shock in a shuttle box using a light-buzzer CS. Then 1 group received a bilateral adrenal demedullation and another group received a sham operation. On retention trials 20 days later, the operated group took more trials than the sham operated mice, or unoperated controls, to reach an avoidance criterion. The role of peripheral autonomic stimulation in acquisition and retention of fearmotivated habits, and possible species differences, are discussed. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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