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  • Title: Post-trial injection of atropine into the caudate nucleus interferes with long-term but not with short-term retention of passive avoidance.
    Author: Prado-Alcalá RA, Signoret-Edward L, Figueroa M, Giordano M, Barrientos MA.
    Journal: Behav Neural Biol; 1984 Sep; 42(1):81-4. PubMed ID: 6508696.
    Abstract:
    One-trial passive avoidance training was given to Wistar rats and retention of the task was measured 30 min and 24 h later. Atropine (60 micrograms) was injected into the anterior caudate nucleus 2 min after training. Excellent retention was evident 30 min after training, whereas a significant deficit in memory was found when retention was tested 24 h after training. These results suggest that blockade of cholinergic activity of the caudate nucleus induced shortly after training interferes with the consolidation of long-term memory but not with short-term memory processes.
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