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Nature 421, 797-799 (20 February 2003) | doi:10.1038/421797a

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Neurobiology: Interneurons take charge

Edvard I. Moser

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The brain's hippocampal region contains many classes of interneurons, which, it transpires, show different patterns of activity. They might contribute to memory by shaping the dynamics of neuronal networks.

Learning something new — and recalling what you've learned — involves large numbers of nerve cells, distributed throughout different parts of the brain. Neuronal assemblies in the hippocampus, for instance, are thought to be essential in encoding, consolidating and retrieving memories.