Evidence map›Paper›PMID 33431847›Full record

ArticleNature communications2021

Perineuronal nets stabilize the grid cell network.

Ane Charlotte Christensen, Kristian Kinden Lensjø, Mikkel Elle Lepperød, Svenn-Arne Dragly, Halvard Sutterud, Jan Sigurd Blackstad, Marianne Fyhn, Torkel Hafting

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
171.6field-weighted citation impact, top 1% of its field
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

50 citing papers in PubMed, 1,846 citations in OpenAlex.

  1. Article
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  8. Critical Periods and Beyond: Dynamic Functions of Perineuronal Nets in Cognition, Development, and Disease.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Review
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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

8 authors at 1 institution in 1 country.

Ane Charlotte ChristensenInstitute of Basic Medical Sciences, University of Oslo, Oslo, Norway.ORCID 0000-0002-9605-5342
Kristian Kinden LensjøDepartment of Biosciences, University of Oslo, Oslo, Norway.ORCID 0000-0003-3145-1659
Mikkel Elle LepperødInstitute of Basic Medical Sciences, University of Oslo, Oslo, Norway.ORCID 0000-0002-4262-5549
Svenn-Arne DraglyCenter for Integrative Neuroplasticity, University of Oslo, Oslo, Norway.ORCID 0000-0002-5596-8030
Halvard SutterudCenter for Integrative Neuroplasticity, University of Oslo, Oslo, Norway.
Jan Sigurd BlackstadDepartment of Biosciences, University of Oslo, Oslo, Norway.ORCID 0000-0002-9052-0661
Marianne FyhnDepartment of Biosciences, University of Oslo, Oslo, Norway.
Torkel HaftingInstitute of Basic Medical Sciences, University of Oslo, Oslo, Norway. torkel.hafting@medisin.uio.no.ORCID 0000-0002-0928-3487
University of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Grid cells are part of a widespread network which supports navigation and spatial memory. Stable grid patterns appear late in development, in concert with extracellular matrix aggregates termed perineuronal nets (PNNs) that condense around inhibitory neurons. It has been suggested that PNNs stabilize synaptic connections and long-term memories, but their role in the grid cell network remains elusive. We show that removal of PNNs leads to lower inhibitory spiking activity, and reduces grid cells' ability to create stable representations of a novel environment. Furthermore, in animals with disrupted PNNs, exposure to a novel arena corrupted the spatiotemporal relationships within grid cell modules, and the stored representations of a familiar arena. Finally, we show that PNN removal in entorhinal cortex distorted spatial representations in downstream hippocampal neurons. Together this work suggests that PNNs provide a key stabilizing element for the grid cell network.

Indexed as

Action PotentialsAnimalsComputer SimulationEntorhinal CortexGrid CellsHippocampusMaleModels, NeurologicalNeuronsRatsRats, Long-EvansTheta RhythmTime Factors

Identifiers

PMID33431847
PMCPMC7801665
OpenAlexW3120392574

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.