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Purely Translational Realignment in Grid Cell Firing Patterns Following Nonmetric Context Change

Marozzi, E; Ginzberg, LL; Alenda, A; Jeffery, KJ; (2015) Purely Translational Realignment in Grid Cell Firing Patterns Following Nonmetric Context Change. Cerebral Cortex , 25 (11) pp. 4619-4627. 10.1093/cercor/bhv120. Green open access

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Abstract

Grid cells in entorhinal and parahippocampal cortices contribute to a network, centered on the hippocampal place cell system, that constructs a representation of spatial context for use in navigation and memory. In doing so, they use metric cues such as the distance and direction of nearby boundaries to position and orient their firing field arrays (grids). The present study investigated whether they also use purely nonmetric "context" information such as color and odor of the environment. We found that, indeed, purely nonmetric cues-sufficiently salient to cause changes in place cell firing patterns-can regulate grid positioning; they do so independently of orientation, and thus interact with linear but not directional spatial inputs. Grid cells responded homogeneously to context changes. We suggest that the grid and place cell networks receive context information directly and also from each other; the information is used by place cells to compute the final decision of the spatial system about which context the animal is in, and by grid cells to help inform the system about where the animal is within it.

Type: Article
Title: Purely Translational Realignment in Grid Cell Firing Patterns Following Nonmetric Context Change
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1093/cercor/bhv120
Publisher version: http://dx.doi.org/10.1093/cercor/bhv120
Language: English
Additional information: © The Author 2015. Published by Oxford University Press This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Keywords: context, grid cells, place cells, sensory integration, spatial learning
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Experimental Psychology
URI: https://discovery.ucl.ac.uk/id/eprint/1472641
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