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Place cells, grid cells, attractors, and remapping

Jeffery, KJ; (2011) Place cells, grid cells, attractors, and remapping. Neural Plasticity , 2011 , Article 182602. 10.1155/2011/182602. Green open access

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Abstract

Place and grid cells are thought to use a mixture of external sensory information and internal attractor dynamics to organize their activity. Attractor dynamics may explain both why neurons react coherently following sufficiently large changes to the environment (discrete attractors) and how firing patterns move smoothly from one representation to the next as an animal moves through space (continuous attractors). However, some features of place cell behavior, such as the sometimes independent responsiveness of place cells to environmental change (called "remapping"), seem hard to reconcile with attractor dynamics. This paper suggests that the explanation may be found in an anatomical separation of the two attractor systems coupled with a dynamic contextual modulation of the connection matrix between the two systems, with new learning being back-propagated into the matrix. Such a scheme could explain how place cells sometimes behave coherently and sometimes independently.

Type: Article
Title: Place cells, grid cells, attractors, and remapping
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1155/2011/182602
Publisher version: http://dx.doi.org/10.1155/2011/182602
Language: English
Additional information: Copyright © 2011 Kathryn J. Jeffery. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited.
Keywords: Animals, Brain Mapping, Cues, Entorhinal Cortex, Hippocampus, Neurons, Rats
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/1312092
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