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- W2740309898 endingPage "e0181618" @default.
- W2740309898 startingPage "e0181618" @default.
- W2740309898 abstract "While grid cells in the medial entorhinal cortex (MEC) of rodents have multiple, regularly arranged firing fields, place cells in the cornu ammonis (CA) regions of the hippocampus mostly have single spatial firing fields. Since there are extensive projections from MEC to the CA regions, many models have suggested that a feedforward network can transform grid cell firing into robust place cell firing. However, these models generate place fields that are consistently too small compared to those recorded in experiments. Here, we argue that it is implausible that grid cell activity alone can be transformed into place cells with robust place fields of realistic size in a feedforward network. We propose two solutions to this problem. Firstly, weakly spatially modulated cells, which are abundant throughout EC, provide input to downstream place cells along with grid cells. This simple model reproduces many place cell characteristics as well as results from lesion studies. Secondly, the recurrent connections between place cells in the CA3 network generate robust and realistic place fields. Both mechanisms could work in parallel in the hippocampal formation and this redundancy might account for the robustness of place cell responses to a range of disruptions of the hippocampal circuitry." @default.
- W2740309898 created "2017-08-08" @default.
- W2740309898 creator A5010142776 @default.
- W2740309898 creator A5011204269 @default.
- W2740309898 creator A5082936256 @default.
- W2740309898 date "2017-07-27" @default.
- W2740309898 modified "2023-10-14" @default.
- W2740309898 title "From grid cells to place cells with realistic field sizes" @default.
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