Evidence map›Paper›PMID 20928834›Full record

ArticleHippocampus2012

The single place fields of CA3 cells: a two-stage transformation from grid cells.

Licurgo de Almeida, Marco Idiart, John E Lisman

Abstract read
In one paragraph

Article in Hippocampus, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Licurgo de AlmeidaDepartment of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, Massachusetts 02454, USA.
Marco Idiart
John E Lisman

Funding

NMDA RECEPTOR FUNCTION IN SCHIZOPHRENIAP50MH060450 · NIMH · MC LEAN HOSPITAL (BELMONT, MA) · PI COYLE, JOSEPH T. · 2000 to 2010
$15.4M
CRCNS: Quantitative description of initial biochemical steps in LTPR01DA027807 · NIDA · BRANDEIS UNIVERSITY · PI LISMAN, JOHN E · 2009 to 2013
$1.6M
NIDA NIH HHS R01 DA027807NIDA NIH HHS R01DA027807NIMH NIH HHS P50 MH060450
6 · The paper itself

Abstract

Granule cells of the dentate gyrus (DG) generally have multiple place fields, whereas CA3 cells, which are second order, have only a single place field. Here, we explore the mechanisms by which the high selectivity of CA3 cells is achieved. Previous work showed that the multiple place fields of DG neurons could be quantitatively accounted for by a model based on the number and strength of grid cell inputs and a competitive network interaction in the DG that is mediated by gamma frequency feedback inhibition. We have now built a model of CA3 based on similar principles. CA3 cells receive input from an average of one active DG cell and from 1,400 cortical grid cells. Based on experimental findings, we have assumed a linear interaction of the two pathways. The results show that simulated CA3 cells generally have a single place field, as observed experimentally. Thus, a two-step process based on simple rules (and that can occur without learning) is able to explain how grid cell inputs to the hippocampus give rise to cells having ultimate spatial selectivity. The CA3 processes that produce a single place depend critically on the competitive network processes and do not require the direct cortical inputs to CA3, which are therefore likely to perform some other unknown function.

Indexed as

Computer SimulationModels, NeurologicalCA3 Region, HippocampalPyramidal Cells

Identifiers

PMID20928834
PMCPMC3690668

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.