Animal studies have shown that fear memories can change when recalled, a process referred to as reconsolidation. We found that oral administration of the -adrenergic receptor antagonist propranolol before memory reactivation in humans erased the behavioral expression of the fear memory 24 h later and prevented the return of fear. Disrupting the reconsolidation of fear memory opens up new avenues for providing a long-term cure for patients with emotional disorders.
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