Hippocampal remapping and grid realignment in entorhinal cortex
Marianne Fyhn,
Torkel Hafting,
Alessandro Treves,
May-Britt Moser and
Edvard I. Moser ()
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Marianne Fyhn: Centre for the Biology of Memory, Norwegian University of Science and Technology, NO-7489 Trondheim, Norway
Torkel Hafting: Centre for the Biology of Memory, Norwegian University of Science and Technology, NO-7489 Trondheim, Norway
Alessandro Treves: Centre for the Biology of Memory, Norwegian University of Science and Technology, NO-7489 Trondheim, Norway
May-Britt Moser: Centre for the Biology of Memory, Norwegian University of Science and Technology, NO-7489 Trondheim, Norway
Edvard I. Moser: Centre for the Biology of Memory, Norwegian University of Science and Technology, NO-7489 Trondheim, Norway
Nature, 2007, vol. 446, issue 7132, 190-194
Abstract:
A sense of place The ability to find one's way depends on the brain's ability to integrate information about location, direction and distance. Recent advances have pointed to 'grid cells' in the brain's entorhinal cortex as one component of the mechanism for calculating position, but the neuronal network computations responsible for spatial navigation and spatial memory formation are not understood. Experiments in rats tasked to track down their food in changing environments now reveal two distinct codes for memory representation in the hippocampus. The formation of statistically independent representations in hippocampal place cells ('remapping') is invariably preceded by a coherent migration of the corresponding ensemble maps in the entorhinal cortex. This allows an animal's position to be represented and updated by the same translation mechanism as it encounters different environments.
Date: 2007
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Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:446:y:2007:i:7132:d:10.1038_nature05601
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DOI: 10.1038/nature05601
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