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      The representation of space in the brain

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      Behavioural Processes

      Elsevier BV

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          Microstructure of a spatial map in the entorhinal cortex.

          The ability to find one's way depends on neural algorithms that integrate information about place, distance and direction, but the implementation of these operations in cortical microcircuits is poorly understood. Here we show that the dorsocaudal medial entorhinal cortex (dMEC) contains a directionally oriented, topographically organized neural map of the spatial environment. Its key unit is the 'grid cell', which is activated whenever the animal's position coincides with any vertex of a regular grid of equilateral triangles spanning the surface of the environment. Grids of neighbouring cells share a common orientation and spacing, but their vertex locations (their phases) differ. The spacing and size of individual fields increase from dorsal to ventral dMEC. The map is anchored to external landmarks, but persists in their absence, suggesting that grid cells may be part of a generalized, path-integration-based map of the spatial environment.
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            Interneurons of the hippocampus.

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              Loss of recent memory after bilateral hippocampal lesions.

               B Milner,  W SCOVILLE (1957)
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                Author and article information

                Journal
                Behavioural Processes
                Behavioural Processes
                Elsevier BV
                03766357
                February 2017
                February 2017
                : 135
                :
                : 113-131
                Article
                10.1016/j.beproc.2016.12.012
                © 2017

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