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Arginine vasotocin delays extinction of a conditioned avoidance behavior in neonatal chicks |
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| Authors: | Joel L. Davis Richard M. Pico |
| Affiliation: | a Aging and Behavioral Biology Research Laboratory (151A2) Veterans Administration Medical Center, Sepulveda, CA 91343, USA b Department of Psychiatry and Biobehavioral Sciences University of California School of Medicine, Los Angeles, CA 90024, USA |
| Abstract: | One minute after single-trial avoidance conditioning, young cockerels received intracerebroventricular or intraperitoneal injections of saline or arginine vasotocin (dose range: 0.004 to 16 μg/chick). Retroactive enhancement of the learned response was observed 24 hours post-training for some dose levels, but not for others. A 0.4 μg vasotocin dose also delayed extinction when injected 9 minutes after training. Behavioral similarities between avian and mammalian responses to vasotocin and other neuroactive peptides are discussed. |
| Keywords: | Arginine vasotocin Memory Chicks L-prolyl-L-arginyl-glycineamide Arginine vasopressin |
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