Lack of consistent behavioural effects of Maudsley reactive and non-reactive rats in a number of animal tests of anxiety and activity.
RATIONALE: A number of previous studies have reported that the Maudsley reactive (MR/Har) and non-reactive (MNRA/Har) strains of rats show behavioural and physiological differences consistent with the hypothesis that these strains differ in emotionality and could therefore be considered a model of trait anxiety in humans. OBJECTIVES: We sought to confirm this observation by determining their behaviour in various animal models of conditioned and unconditioned fear. METHODS: Both strains were e...Expand abstract
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