Abstract
Effects of epinephrine and nor-epinephrine on avoidance behavior in 30 male C57BL/6J mice were investigated. Ss were placed in an approach-avoidance situation created in a linear maze with an electric grid in front of the goalbox. After avoidance behavior was established, each S was placed in the conflict situation under each of three drug conditions: epinephrine, nor-epinephrine, and placebo. The results showed that all conditions were significantly different from each other, with the greatest amount of avoidance behavior being shown under epinephrine and the greatest approach behavior under nor-epinephrine. It was concluded that epinephrine and nor-epinephrine may have differential effects on approach-avoidance behavior.
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