Differences in extinction of an appetitive instrumental response in female inbred Roman High-(RHA-I) and Low-(RLA-I) Avoidance rats

María J. Gómez, Lourdes de la Torre, José E. Callejas-Aguilera, Juan M. Rosas, María D. Escarabajal, Ángeles Agüero, Adolf Tobeña, Albert Fernández-Teruel, Carmen Torres

Research output: Contribution to journalArticleResearchpeer-review

Abstract

An experiment was conducted with the goal of exploring strain differences between female inbred Roman High and Low Avoidance rats (RHA-I, and RLA-I, respectively) on acquisition and extinction of a food-rewarded running response in a straight alley. Acquisition proceeded faster in the less emotional RHA-I and Wistar rats (used as controls) than in the more emotional RLA-I rats. However, extinction proceeded slower in RHA-I rats than in RLA-I and Wistar rats. This strain-based asymmetry on instrumental performance between acquisition and extinction is discussed in terms of strain differences in locomotor activity, associative flexibility and emotional reactivity.
Original languageEnglish
Pages (from-to)181-188
JournalPsicologica
Volume33
Issue number2
Publication statusPublished - 23 Mar 2012

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