Evidence map›Paper›PMID 26209185›Full record

ArticleHearing research2015

Insertion trauma and recovery of function after cochlear implantation: Evidence from objective functional measures.

Bryan E Pfingst, Aaron P Hughes, Deborah J Colesa, Melissa M Watts, Stefan B Strahl, Yehoash Raphael

Open access · greenAbstract read
In one paragraph

Article in Hearing research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

40 citing papers in PubMed, 75 citations in OpenAlex.

  1. Article
  2. Dynamics of neural responsiveness in pediatric cochlear implant users.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
    Article
  3. Article
  4. Cochlear Implant Insertion Trauma Is Associated With Spiral Ganglion Neuron "Dead Zones" in the Human.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2026
    Article
  5. ART and AutoART ECAP measurements and cochlear nerve anatomy as predictors in adult cochlear implant recipients.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024
    Article
  6. Preoperative EABR evaluation of auditory pathway integrity in patients with different etiology and postoperative effect estimation.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024
    Article
  7. Effect of congenital inner ear malformations (IEMs) on electrically evoked compound action potential (ECAP) responses in cochlear implant children.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2023
    Review
  8. Article
  9. Cochlear Health and Cochlear-implant Function.Journal of the Association for Research in Otolaryngology : JARO · 2023
    Review
  10. Review
  11. Review
  12. Article
  13. Development and Characterization of an Electrocochleography-Guided Robotics-Assisted Cochlear Implant Array Insertion System.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2022
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Relationships between Intrascalar Tissue, Neuron Survival, and Cochlear Implant Function.Journal of the Association for Research in Otolaryngology : JARO · 2020
    Article
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 2 countries.

Bryan E PfingstKresge Hearing Research Institute, Department of Otolaryngology - Head and Neck Surgery, University of Michigan, Ann Arbor, MI, USA. Electronic address: bpfingst@umich.edu.
Aaron P HughesKresge Hearing Research Institute, Department of Otolaryngology - Head and Neck Surgery, University of Michigan, Ann Arbor, MI, USA.
Deborah J ColesaKresge Hearing Research Institute, Department of Otolaryngology - Head and Neck Surgery, University of Michigan, Ann Arbor, MI, USA.
Melissa M WattsKresge Hearing Research Institute, Department of Otolaryngology - Head and Neck Surgery, University of Michigan, Ann Arbor, MI, USA.
Stefan B StrahlMED-EL GmbH, Innsbruck, Austria.
Yehoash RaphaelKresge Hearing Research Institute, Department of Otolaryngology - Head and Neck Surgery, University of Michigan, Ann Arbor, MI, USA.
University of Michigan–Ann Arbor · USMED-EL (Austria) · AT

Funding

Scientific Synergy CoreP30DC005188 · NIDCD · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ALTSCHULER, RICHARD A · 2002 to 2016
$10.3M
Hearing Preservation for Noise or Cochlear Implantation: Mechanisms & TreatmentsR01DC011294 · NIDCD · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ALTSCHULER, RICHARD A · 2011 to 2015
$2.5M
Cochlear Implants in Reinnervated EarsR01DC010412 · NIDCD · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI RAPHAEL, YEHOASH · 2010 to 2014
$2.2M
NIDCD NIH HHS P30 DC005188NIDCD NIH HHS P30 DC05188NIDCD NIH HHS R01 DC010412NIDCD NIH HHS R01 DC011294
6 · The paper itself

Abstract

Partial loss and subsequent recovery of cochlear implant function in the first few weeks following cochlear implant surgery has been observed in previous studies using psychophysical detection thresholds. In the current study, we explored this putative manifestation of insertion trauma using objective functional measures: electrically-evoked compound action potential (ECAP) amplitude-growth functions (ECAP amplitude as a function of stimulus level). In guinea pigs implanted in a hearing ear with good post-implant hearing and good spiral ganglion neuron (SGN) survival, consistent patterns of ECAP functions were observed. The slopes of ECAP growth functions were moderately steep on the day of implant insertion, decreased to low levels over the first few days after implantation and then increased slowly over several weeks to reach a relatively stable level. In parallel, ECAP thresholds increased over time after implantation and then recovered, although more quickly, to a relatively stable low level as did thresholds for eliciting a facial twitch. Similar results were obtained in animals deafened but treated with an adenovirus with a neurotrophin gene insert that resulted in good SGN preservation. In contrast, in animals implanted in deaf ears that had relatively poor SGN survival, ECAP slopes reached low levels within a few days after implantation and remained low. These results are consistent with the idea that steep ECAP growth functions require a healthy population of auditory nerve fibers and that cochlear implant insertion trauma can temporarily impair the function of a healthy SGN population.

Indexed as

Cochlear ImplantsAcousticsAction PotentialsAnimalsAuditory ThresholdCochleaCochlear ImplantationCochlear NerveEarElectric StimulationEvoked Potentials, AuditoryGuinea PigsHearingImmunohistochemistryMaleNeuronsAmplitude-growth functionAuditory-nerve survivalCochlear implantECAPInsertion trauma

Identifiers

PMID26209185
PMCPMC4674315
OpenAlexW1004733539

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.