Evidence map›Paper›PMID 25552641›Full record

ArticleJournal of neurophysiology2015

Midcervical neuronal discharge patterns during and following hypoxia.

M S Sandhu, D M Baekey, N G Maling, J C Sanchez, P J Reier, D D Fuller

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of neurophysiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
0.9field-weighted citation impact, top 31% 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

15 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Review
  3. A cholinergic spinal pathway for the adaptive control of breathing.bioRxiv : the preprint server for biology · 2025
    Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Intermittent Hypoxia Enhances Functional Connectivity of Midcervical Spinal Interneurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  13. Article
  14. Article
  15. Intermittent hypoxia and neurorehabilitation.Journal of applied physiology (Bethesda, Md. : 1985) · 2015
    Review
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

6 authors at 2 institutions in 1 country.

M S SandhuDepartment of Physical Therapy, University of Florida, Gainesville, Florida;
D M BaekeyDepartment of Physiological Sciences, University of Florida, Gainesville, Florida; and.
N G MalingDepartment of Neuroscience, University of Florida, Gainesville, Florida;
J C SanchezDepartment of Biomedical Engineering, University of Miami, Miami, Florida.
P J ReierDepartment of Neuroscience, University of Florida, Gainesville, Florida;
D D FullerDepartment of Physical Therapy, University of Florida, Gainesville, Florida; ddf@phhp.ufl.edu.
University of Florida · USUniversity of Miami · US

Funding

Plasticity and Repair in the Phrenic Motor SystemR01NS054025 · NINDS · UNIVERSITY OF FLORIDA · PI REIER, PAUL J · 2006 to 2015
$3.0M
Modulation of Phrenic Motoneuron Plasticity after Cervical Spinal Cord InjuryR01NS080180 · NINDS · UNIVERSITY OF FLORIDA · PI FULLER, DAVID D · 2012 to 2016
$1.7M
NINDS NIH HHS 1-R01-NS-054025-06NINDS NIH HHS 1-R01-NS-080180-01A1
6 · The paper itself

Abstract

Anatomical evidence indicates that midcervical interneurons can be synaptically coupled with phrenic motoneurons. Accordingly, we hypothesized that interneurons in the C3-C4 spinal cord can display discharge patterns temporally linked with inspiratory phrenic motor output. Anesthetized adult rats were studied before, during, and after a 4-min bout of moderate hypoxia. Neuronal discharge in C3-C4 lamina I-IX was monitored using a multielectrode array while phrenic nerve activity was extracellularly recorded. For the majority of cells, spike-triggered averaging (STA) of ipsilateral inspiratory phrenic nerve activity based on neuronal discharge provided no evidence of discharge synchrony. However, a distinct STA phrenic peak with a 6.83 ± 1.1 ms lag was present for 5% of neurons, a result that indicates a monosynaptic connection with phrenic motoneurons. The majority (93%) of neurons changed discharge rate during hypoxia, and the diverse responses included both increased and decreased firing. Hypoxia did not change the incidence of STA peaks in the phrenic nerve signal. Following hypoxia, 40% of neurons continued to discharge at rates above prehypoxia values (i.e., short-term potentiation, STP), and cells with initially low discharge rates were more likely to show STP (P < 0.001). We conclude that a population of nonphrenic C3-C4 neurons in the rat spinal cord is synaptically coupled to the phrenic motoneuron pool, and these cells can modulate inspiratory phrenic output. In addition, the C3-C4 propriospinal network shows a robust and complex pattern of activation both during and following an acute bout of hypoxia.

Indexed as

Cervical VertebraeAction PotentialsAnimalsHypoxiaMaleMotor NeuronsPhrenic NerveRatsRats, Sprague-DawleySpinal Cordcervical interneuronshypoxiaphrenicplasticityshort-term potentiation

Identifiers

PMID25552641
PMCPMC4416573
OpenAlexW2059207259

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.