Evidence map›Paper›PMID 23446690›Full record

ArticleJournal of neurophysiology2013

Animal-to-animal variability in the phasing of the crustacean cardiac motor pattern: an experimental and computational analysis.

Alex H Williams, Molly A Kwiatkowski, Adam L Mortimer, Eve Marder, Mary Lou Zeeman, Patsy S Dickinson

Erratum issuedAbstract read
In one paragraph

Article in Journal of neurophysiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed.

  1. Article
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  5. Review
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  12. The neuromuscular transform of the lobster cardiac system explains the opposing effects of a neuromodulator on muscle output.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  13. Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

6 authors.

Alex H WilliamsNeuroscience Program, Bowdoin College, Brunswick, Maine 04011, USA.
Molly A Kwiatkowski
Adam L Mortimer
Eve Marder
Mary Lou Zeeman
Patsy S Dickinson

Funding

The Maine Biomedical Research Network (INBRE)P20GM103423 · NIGMS · MOUNT DESERT ISLAND BIOLOGICAL LAB · PI Dustin Lynn Updike · 2012 to 2026
$60.0M
WNT SIGNALING IN THE DEVELOPING GASTROINTESTINAL TRACTP20RR016463 · NCRR · MOUNT DESERT ISLAND BIOLOGICAL LAB · PI HAND, PATRICIA H. · 2001 to 2011
$41.0M
Variability and Compensation in Reliable Neuronal NetworksR01MH046742 · NIMH · BRANDEIS UNIVERSITY · PI MARDER, EVE E · 1990 to 2025
$7.8M
NCRR NIH HHS 5-P20-RR-016463-12NIGMS NIH HHS 8-P20-GM-103423-12NIMH NIH HHS R01 MH046742NIMH NIH HHS R01-MH-46742-22
6 · The paper itself

Abstract

The cardiac ganglion (CG) of Homarus americanus is a central pattern generator that consists of two oscillatory groups of neurons: "small cells" (SCs) and "large cells" (LCs). We have shown that SCs and LCs begin their bursts nearly simultaneously but end their bursts at variable phases. This variability contrasts with many other central pattern generator systems in which phase is well maintained. To determine both the consequences of this variability and how CG phasing is controlled, we modeled the CG as a pair of Morris-Lecar oscillators coupled by electrical and excitatory synapses and constructed a database of 15,000 simulated networks using random parameter sets. These simulations, like our experimental results, displayed variable phase relationships, with the bursts beginning together but ending at variable phases. The model suggests that the variable phasing of the pattern has important implications for the functional role of the excitatory synapses. In networks in which the two oscillators had similar duty cycles, the excitatory coupling functioned to increase cycle frequency. In networks with disparate duty cycles, it functioned to decrease network frequency. Overall, we suggest that the phasing of the CG may vary without compromising appropriate motor output and that this variability may critically determine how the network behaves in response to manipulations.

Indexed as

Models, NeurologicalAction PotentialsAnalysis of VarianceAnimalsCentral Pattern GeneratorsComputer SimulationGanglia, InvertebrateHeartNephropidaeNerve NetNeuronsSynapsescentral pattern generatormorris-lecar modelneuronal oscillatorsphase relationships

Identifiers

PMID23446690
PMCPMC3653045

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.