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      Two stream hypothesis of visual processing for navigation in mouse

      Current Opinion in Neurobiology
      Elsevier BV

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          Most cited references72

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          Conjunctive representation of position, direction, and velocity in entorhinal cortex.

          Grid cells in the medial entorhinal cortex (MEC) are part of an environment-independent spatial coordinate system. To determine how information about location, direction, and distance is integrated in the grid-cell network, we recorded from each principal cell layer of MEC in rats that explored two-dimensional environments. Whereas layer II was predominated by grid cells, grid cells colocalized with head-direction cells and conjunctive grid x head-direction cells in the deeper layers. All cell types were modulated by running speed. The conjunction of positional, directional, and translational information in a single MEC cell type may enable grid coordinates to be updated during self-motion-based navigation.
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            Spatial localization does not require the presence of local cues

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              Spatial representation in the entorhinal cortex.

              As the interface between hippocampus and neocortex, the entorhinal cortex is likely to play a pivotal role in memory. To determine how information is represented in this area, we measured spatial modulation of neural activity in layers of medial entorhinal cortex projecting to the hippocampus. Close to the postrhinal-entorhinal border, entorhinal neurons had stable and discrete multipeaked place fields, predicting the rat's location as accurately as place cells in the hippocampus. Precise positional modulation was not observed more ventromedially in the entorhinal cortex or upstream in the postrhinal cortex, suggesting that sensory input is transformed into durable allocentric spatial representations internally in the dorsocaudal medial entorhinal cortex.
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                Author and article information

                Contributors
                (View ORCID Profile)
                Journal
                Current Opinion in Neurobiology
                Current Opinion in Neurobiology
                Elsevier BV
                09594388
                October 2020
                October 2020
                : 64
                : 70-78
                Article
                10.1016/j.conb.2020.03.009
                b7f031d5-3c2b-4fc8-b394-fdd3dafa4caa
                © 2020

                https://www.elsevier.com/tdm/userlicense/1.0/


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