1. Relationship between short- and long-term memory and short- and long-term extinction
- Author
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Cammarota, Martín, Bevilaqua, Lia R.M., Rossato, Janine I., Ramirez, Maria, Medina, Jorge H., and Izquierdo, Iván
- Subjects
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SHORT-term memory , *RATS , *LEARNING , *PROTEIN synthesis - Abstract
Abstract: Both the acquisition and the extinction of memories leave short- and long-term mnemonic traces. Here, we show that in male Wistar rats, the short-term memory for a step-down inhibitory avoidance task (IA) is resistant to extinction, and that its expression does not influence retrieval or extinction of long-term memory. It has been known for some time that short- and long-term inhibitory avoidance memory involve separate and parallel processes. Here we show that, instead, short-term extinction of IA long-term memory is the first step towards its long-term extinction, and that this link requires functional NMDA receptors and protein synthesis in the CA1 region of the dorsal hippocampus at the time of the first CS-no US presentation. [Copyright &y& Elsevier]
- Published
- 2005
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