As a test of the habit-reversal hypothesis of the effects of ECS on relearning recent and remote tasks, rats were given acquisition training in a multi-unit linear maze with either black-white or dark grey-light grey discriminanda. For each group, there followed reversal training, a series of electroconvulsive shocks, and then retraining either on the acquisition or the reversal problem. Control groups received no shocks. The results offered only limited support for the habit-reversal hypothesis.
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