Evidence map›Paper›PMID 20437534›Full record

ArticleThe Journal of comparative neurology2010

Bilateral effects of unilateral cochlear implantation in congenitally deaf cats.

Jahn N O'Neil, Charles J Limb, Christa A Baker, David K Ryugo

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in The Journal of comparative neurology, 2010. 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 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.2field-weighted citation impact, top 14% 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

22 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Dissociated Representation of Binaural Cues in Single-Sided Deafness: Implications for Cochlear Implantation.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  3. Effect of Chronic Stimulation and Stimulus Level on Temporal Processing by Cochlear Implant Listeners.Journal of the Association for Research in Otolaryngology : JARO · 2019
    Article
  4. Article
  5. Chronic Deafness Degrades Temporal Acuity in the Electrically Stimulated Auditory Pathway.Journal of the Association for Research in Otolaryngology : JARO · 2018
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Feline deafness.The Veterinary clinics of North America. Small animal practice · 2012
    Review
  16. Article
  17. Review
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Jahn N O'NeilDepartment of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
Charles J Limb
Christa A Baker
David K Ryugo
Johns Hopkins Medicine · USJohns Hopkins University · US

Funding

Wilmer Core Grant for Vision ResearchP30EY001765 · NEI · JOHNS HOPKINS UNIVERSITY · PI Jiang Qian · 1985 to 2026
$22.1M
The Histology CoreP30DC005211 · NIDCD · JOHNS HOPKINS UNIVERSITY · PI YOUNG, ERIC DANIEL · 2002 to 2016
$9.1M
Training Program in Hearing and BalanceT32DC000023 · NIDCD · JOHNS HOPKINS UNIVERSITY · PI CULLEN, KATHLEEN E · 1989 to 2025
$8.7M
SINGLE-CELL MARKING STUDIES OF THE AUDITORY NERVER01DC000232 · NIDCD · JOHNS HOPKINS UNIVERSITY · PI RYUGO, DAVID K. · 1989 to 2010
$6.4M
NEI NIH HHS EY01765NEI NIH HHS P30 EY001765NIDCD NIH HHS DC00023NIDCD NIH HHS DC000232NIDCD NIH HHS DC005211NIDCD NIH HHS P30 DC005211NIDCD NIH HHS R01 DC000232NIDCD NIH HHS T32 DC000023
6 · The paper itself

Abstract

Congenital deafness results in synaptic abnormalities in auditory nerve endings. These abnormalities are most prominent in terminals called endbulbs of Held, which are large, axosomatic synaptic endings whose size and evolutionary conservation emphasize their importance. Transmission jitter, delay, or failures, which would corrupt the processing of timing information, are possible consequences of the perturbations at this synaptic junction. We sought to determine whether electrical stimulation of the congenitally deaf auditory system via cochlear implants would restore the endbulb synapses to their normal morphology. Three and 6-month-old congenitally deaf cats received unilateral cochlear implants and were stimulated for a period of 10-19 weeks by using human speech processors. Implanted cats exhibited acoustic startle responses and were trained to approach their food dish in response to a specific acoustic stimulus. Endbulb synapses were examined by using serial section electron microscopy from cohorts of cats with normal hearing, congenital deafness, or congenital deafness with a cochlear implant. Synapse restoration was evident in endbulb synapses on the stimulated side of cats implanted at 3 months of age but not at 6 months. In the young implanted cats, postsynaptic densities exhibited normal size, shape, and distribution, and synaptic vesicles had density values typical of hearing cats. Synapses of the contralateral auditory nerve in early implanted cats also exhibited synapses with more normal structural features. These results demonstrate that electrical stimulation with a cochlear implant can help preserve central auditory synapses through direct and indirect pathways in an age-dependent fashion.

Indexed as

Cochlear ImplantsFunctional LateralityAcoustic StimulationAge FactorsAnimalsAuditory PerceptionCatsCochlear NerveDeafnessElectric StimulationEvoked PotentialsHumansMicroscopy, ElectronReflex, StartleSpeechSynapses

Identifiers

PMID20437534
PMCPMC3936022
OpenAlexW2105572525

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.