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Curr Opin Neurobiol. 2014 Apr;25:169-75. doi: 10.1016/j.conb.2014.01.013. Epub 2014 Feb 20.

Spatial coding and attractor dynamics of grid cells in the entorhinal cortex.

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Edmond and Lily Safra Center for Brain Sciences, and Racah Institute of Physics, Hebrew University, Jerusalem 91904, Israel. Electronic address:


Recent experiments support the theoretical hypothesis that recurrent connectivity plays a central role within the medial entorhinal cortex, by shaping activity of large neural populations, such that their joint activity lies within a continuous attractor. This conjecture involves dynamics within each population (module) of cells that share the same grid spacing. In addition, recent theoretical works raise a hypothesis that, taken together, grid cells from all modules maintain a sophisticated representation of position with uniquely large dynamical range, when compared with other known neural codes in the brain. To maintain such a code, activity in different modules must be coupled, within the entorhinal cortex or through the hippocampus.

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