Abstract
Rats trained in the classical conditioning fear response were subjected to amygdalectomy 24 h after conditioning and were tested for retention 4 days and 4-7 weeks postoperatively. The results of the experiment indicated that amygdalectomy disrupted the intermediate and long-term retention of the classically conditioned fear response. There was no recovery of performance after the amygdalectomy. The experiment confirms previous reports of retention deficits after amygdalectomy in undertrained Ss, but does not corroborate previous reports of recovery of function, with additional training, after amygdalectomy.
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