Evidence map›Paper›PMID 24076498›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2015

A barrel-related interneuron in layer 4 of rat somatosensory cortex with a high intrabarrel connectivity.

Christian Koelbl, Moritz Helmstaedter, Joachim Lübke, Dirk Feldmeyer

Abstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

41 citing papers in PubMed, 77 citations in OpenAlex.

  1. Article
  2. Article
  3. Information transfer and recovery for the sense of touch.Cerebral cortex (New York, N.Y. : 1991) · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Sharp Tuning of Head Direction and Angular Head Velocity Cells in the Somatosensory Cortex.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Seasonal plasticity in the adult somatosensory cortex.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
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

4 authors at 3 institutions in 2 countries.

Christian KoelblDepartment of Cell Physiology, Max Planck Institute of Medical Research, Jahnstr. 20, D-69120 Heidelberg, Germany Current address: Section of Cardiovascular Medicine, Boston University Medical Center, 88 East Newton Street, Boston, MA 02118, USA.
Moritz HelmstaedterDepartment of Cell Physiology, Max Planck Institute of Medical Research, Jahnstr. 20, D-69120 Heidelberg, Germany Current address: Structure of Neocortical Circuits Group, Max Planck Institute of Neurobiology, Am Klopferspitz 18, D-82152 Martinsried, Germany.
Joachim LübkeInstitute for Neuroscience and Medicine, INM-2, Research Centre Jülich, Leo-Brandt-Str., D-52425 Jülich, Germany Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Pauwelstr. 30, D-52074 Aachen, Germany Jülich-Aachen Research Alliance, Translational Brain Medicine (JARA-Brain), D-52074, Aachen, Germany.
Dirk FeldmeyerInstitute for Neuroscience and Medicine, INM-2, Research Centre Jülich, Leo-Brandt-Str., D-52425 Jülich, Germany Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Pauwelstr. 30, D-52074 Aachen, Germany Jülich-Aachen Research Alliance, Translational Brain Medicine (JARA-Brain), D-52074, Aachen, Germany.
Brain (Germany) · DEBoston Medical Center · USMax Planck Institute of Neurobiology · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Synaptic connections between identified fast-spiking (FS), parvalbumin (PV)-positive interneurons, and excitatory spiny neurons in layer 4 (L4) of the barrel cortex were investigated using patch-clamp recordings and simultaneous biocytin fillings. Three distinct clusters of FS L4 interneurons were identified based on their axonal morphology relative to the barrel column suggesting that these neurons do not constitute a homogeneous interneuron population. One L4 FS interneuron type had an axonal domain strictly confined to a L4 barrel and was therefore named "barrel-confined inhibitory interneuron" (BIn). BIns established reliable inhibitory synaptic connections with L4 spiny neurons at a high connectivity rate of 67%, of which 69% were reciprocal. Unitary IPSPs at these connections had a mean amplitude of 0.9 ± 0.8 mV with little amplitude variation and weak short-term synaptic depression. We found on average 3.7 ± 1.3 putative inhibitory synaptic contacts that were not restricted to perisomatic areas. In conclusion, we characterized a novel type of barrel cortex interneuron in the major thalamo-recipient layer 4 forming dense synaptic networks with L4 spiny neurons. These networks constitute an efficient and powerful inhibitory feedback system, which may serve to rapidly reset the barrel microcircuitry following sensory activation.

Indexed as

AnimalsAxonsExcitatory Postsynaptic PotentialsInhibitory Postsynaptic PotentialsInterneuronsNeuronsRatsRats, WistarSomatosensory CortexSynapsesbarrel cortexfast-spikingGABAergic interneuronlayer 4spiny stellate cell

Identifiers

PMID24076498
PMCPMC4318534
OpenAlexW2171962195

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

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.