Evidence map›Paper›PMID 19321765›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2009

Correlated connectivity and the distribution of firing rates in the neocortex.

Alexei A Koulakov, Tomás Hromádka, Anthony M Zador

Abstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.

0numbers the graph read from it
0cells of the map it votes in
53citing 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

53 citing papers in PubMed.

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  9. [Evolution of auditory response signal-to-noise ratio in ascending auditory pathways].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2021
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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.

Alexei A KoulakovCold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA. akula@cshl.edu
Tomás Hromádka
Anthony M Zador

Funding

Quantitiative model for the development of neural topographic mapsR01EY018068 · NEI · COLD SPRING HARBOR LABORATORY · PI KOULAKOV, ALEXEI · 2008 to 2011
$1.7M
NEI NIH HHS R01 EY018068NEI NIH HHS R01EY018068
6 · The paper itself

Abstract

Two recent experimental observations pose a challenge to many cortical models. First, the activity in the auditory cortex is sparse, and firing rates can be described by a lognormal distribution. Second, the distribution of nonzero synaptic strengths between nearby cortical neurons can also be described by a lognormal distribution. Here we use a simple model of cortical activity to reconcile these observations. The model makes the experimentally testable prediction that synaptic efficacies onto a given cortical neuron are statistically correlated, i.e., it predicts that some neurons receive stronger synapses than other neurons. We propose a simple Hebb-like learning rule that gives rise to such correlations and yields both lognormal firing rates and synaptic efficacies. Our results represent a first step toward reconciling sparse activity and sparse connectivity in cortical networks.

Indexed as

Action PotentialsModels, NeurologicalAnimalsNeocortexNerve NetNeuronsSynapses

Identifiers

PMID19321765
PMCPMC2784918

What OpenQuestion holds

Textmetadata
LicenceTDM
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.