Evidence map›Paper›PMID 20592119›Full record

ArticleJournal of neurophysiology2010

Characteristics and organization of discharge properties in rat hindlimb motoneurons.

Vladimir V Turkin, Derek O'Neill, Ranu Jung, Alexandre Iarkov, Thomas M Hamm

Abstract read
In one paragraph

Article in Journal of neurophysiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
–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

29 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Machine-Learning Classification of Motor Unit Types in the Adult Mouse.bioRxiv : the preprint server for biology · 2025
    Article
  4. Article
  5. Article
  6. Recruitment of Motoneurons.Advances in neurobiology · 2022
    Article
  7. Article
  8. Article
  9. Article
  10. Scaling of Motor Output, From Mouse to Humans.Physiology (Bethesda, Md.) · 2019
    Review
  11. Article
  12. Article
  13. Article
  14. A motor unit-based model of muscle fatigue.PLoS computational biology · 2017
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

5 authors.

Vladimir V TurkinSt. Joseph's Hospital and Medical Center, Barrow Neurological Institute, Division of Neurobiology, 350 W. Thomas Rd., Phoenix, AZ 85013, USA.
Derek O'Neill
Ranu Jung
Alexandre Iarkov
Thomas M Hamm

Funding

CRCNS: Modeling Neuromusculoskeletal Alterations after Spinal Cord InjuryR01NS054282 · NINDS · ARIZONA STATE UNIVERSITY-TEMPE CAMPUS · PI JUNG, RANU · 2005 to 2008
$1.3M
NINDS NIH HHS R01 NS054282NINDS NIH HHS R01-NS-054282
6 · The paper itself

Abstract

The discharge properties of hindlimb motoneurons in ketamine-xylazine anesthetized rats were measured to assess contributions of persistent intrinsic currents to these characteristics and to determine their distribution in motoneuron pools. Most motoneurons (30/37) responded to ramp current injections with adapting patterns of discharge and the frequency-current (f-I) relations of nearly all motoneurons included a steep subprimary range of discharge. Despite the prevalence of adapting f-I relations, responses included indications that persistent inward currents (PICs) were activated, including increased membrane noise and prepotentials before discharge, as well as counterclockwise hysteresis and secondary ranges in f-I relations. Examination of spike thresholds and afterhyperpolarization (AHP) trajectories during repetitive discharge revealed systematic changes in threshold and trajectory within the subprimary, primary, and secondary f-I ranges. These changes in the primary and secondary ranges were qualitatively similar to those described previously for cat motoneurons. Within the subprimary range, AHP trajectories often included shallow approaches to threshold following recruitment and slope of the AHP ramp consistently increased until the subprimary range was reached. We suggest that PICs activated near recruitment contributed to these slope changes and formation of the subprimary range. Discharge characteristics were strongly correlated with motoneuron size, using input conductance as an indicator of size. Discharge adaptation, recruitment current, and frequency increased with input conductance, whereas both subprimary and primary f-I gains decreased. These results are discussed with respect to potential mechanisms and their functional implications.

Indexed as

Action PotentialsAnimalsHindlimbMotor NeuronsRatsRats, Long-EvansRecruitment, Neurophysiological

Identifiers

PMID20592119
PMCPMC2944683

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.