Evidence map›Paper›PMID 19273572›Full record

ReviewThe Journal of physiology2009

Developmental alterations in the functional properties of excitatory neocortical synapses.

Dirk Feldmeyer, Gabriele Radnikow

Abstract readReview
In one paragraph

Review in The Journal of physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Developmental Increase of Neocortical Presynaptic EfficacyFrontiers in synaptic neuroscience · 2019
    Article
  7. Article
  8. Mechanisms of Hierarchical Cortical Maturation.Frontiers in cellular neuroscience · 2017
    Review
  9. Article
  10. Delayed and Temporally Imprecise Neurotransmission in Reorganizing Cortical Microcircuits.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
    Article
  11. Article
  12. Article
  13. Developmental tightening of cerebellar cortical synaptic influx-release coupling.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
    Article
  14. Article
  15. Article
  16. Article
  17. The developmental stages of synaptic plasticity.The Journal of physiology · 2014
    Review
  18. Emergence of adaptive computation by single neurons in the developing cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  19. Article
  20. 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

2 authors.

Dirk FeldmeyerResearch Centre Jülich, Institute for Neuroscience and Medicine, INM-2, Juelich, Germany. d.feldmeyer@fz-juelich.de
Gabriele Radnikow

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In the neocortex, most excitatory, glutamatergic synapses are established during the first 4-5 weeks after birth. During this period profound changes in the properties of synaptic transmission occur. Excitatory postsynaptic potentials (EPSPs) at immature synaptic connections are profoundly and progressively reduced in response to moderate to high frequency (5-100 Hz) stimulation. With maturation, this frequency-dependent depression becomes progressively weaker and may eventually transform into a weak to moderate EPSP facilitation. In parallel to changes in the short-term plasticity, a reduction in the synaptic reliability occurs at most glutamatergic neocortical synapses: immature synapses show a high probability of neurotransmitter release as indicated by their low failure rate and small EPSP amplitude variation. This high reliability is reduced in mature synapses, which show considerably higher failure rates and more variable EPSP amplitudes. During early neocortical development synaptic vesicle pools are not yet fully differentiated and their replenishment may be slow, thus resulting in EPSP amplitude depression. The decrease in the probability of neurotransmitter release may be the result of an altered Ca(2+) control in the presynaptic terminal with a reduced Ca(2+) influx and/or a higher Ca(2+) buffering capacity. This may lead to a lower synaptic reliability and a weaker short-term synaptic depression with maturation.

Indexed as

Models, NeurologicalAdaptation, PhysiologicalAnimalsExcitatory Postsynaptic PotentialsHumansNeocortexNerve NetSynapsesSynaptic Transmission

Identifiers

PMID19273572
PMCPMC2689330

What OpenQuestion holds

Textmetadata
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.