Amnesic and Aversive Effects of Electroconvulsive Shock

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Abstract
4 groups of 5 rats were pre-trained to run to a goalbox for food reinforcement and then were given differential goalbox treatment. Groups FS-PECS received foot-shock (FS) and pseudo (P) electroconvulsive shock (ECS) in goalbox and did not differ in trials to fear acquisition from a group receiving FS and ECS in goalbox. Group FS-ECS extinguished goalbox fear faster than Group FS-PECS demonstrating amnesic properties of ECS. Group ECS received only ECS in goalbox and was slower in fear acquisition and faster in fear extinction than either Groups FS-PECS or FS-ECS. Fear acquisition by Group ECS demonstrated aversive properties of ECS. A fourth group received only PECS in goalbox and showed no fear acquisition.

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