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Inhibition of passive-avoidance memory formation in the day-old chick by the opioid cytochrophin-4

Freeman, Fiona; Young, I M


Cytochrophin-4 (cyt-4), a tetrapeptide with opioid-like activity, caused amnesia when injected into chick forebrain 5 hr after passive-avoidance training. Bilateral injections of cyt-4 directly into the lobus parolfactorius (LPO) resulted in the chicks being amnesic for the training task 24 hr later, whereas unilateral injections of cyt-4 were effective only when injected into the right LPO. Cyt-4-induced amnesia was reversed by the general opioid antagonist, naloxone, indicating that cyt-4 was...[Show more]

CollectionsANU Research Publications
Date published: 2000
Type: Journal article
Source: Learning and Memory
DOI: 10.1101/lm.7.4.213


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