Evidence map›Paper›PMID 34073290›Full record

ReviewAudiology research2021

Meta-Analysis-Correlation between Spiral Ganglion Cell Counts and Speech Perception with a Cochlear Implant.

Yew-Song Cheng, Mario A Svirsky

Abstract readReview
In one paragraph

Review in Audiology research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing 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

18 citing papers in PubMed.

  1. Neural Hearing Loss: Mechanisms, Diagnosis and Treatment Horizons.Journal of the Association for Research in Otolaryngology : JARO · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Review
  6. A deep learning framework for understanding cochlear implants.bioRxiv : the preprint server for biology · 2025
    Article
  7. Observational
  8. Article
  9. Article
  10. An Electrically Evoked Compound Action Potential Marker for Local Spiral Ganglion Neuron Degeneration: The Failure Index.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  11. Article
  12. Review
  13. Cochlear Health and Cochlear-implant Function.Journal of the Association for Research in Otolaryngology : JARO · 2023
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. 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

2 authors.

Yew-Song ChengDepartment of Otolaryngology, New York University School of Medicine, New York, NY 10016, USA.
Mario A SvirskySkirball Institute for Biomolecular Medicine, New York University School of Medicine, New York, NY 10016, USA.ORCID 0000-0002-9238-0682

Funding

MODELS OF SPEECH PERCEPTION BY COCHLEAR IMPLANT USERSR01DC003937 · NIDCD · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI SVIRSKY, MARIO A · 1999 to 2020
$7.2M
NIDCD NIH HHS R01 DC003937
6 · The paper itself

Abstract

The presence of spiral ganglion cells (SGCs) is widely accepted to be a prerequisite for successful speech perception with a cochlear implant (CI), because SGCs provide the only known conduit between the implant electrode and the central auditory system. By extension, it has been hypothesized that the number of SGCs might be an important factor in CI outcomes. An impressive body of work has been published on findings from the laborious process of collecting temporal bones from CI users and counting the number of SGCs to correlate those numbers with speech perception scores, but the findings thus far have been conflicting. We performed a meta-analysis of all published studies with the hope that combining existing data may help us reach a more definitive conclusion about the relationship between SGC count and speech perception scores in adults.

Indexed as

cochlear implantsspeech perceptionspiral ganglion cells

Identifiers

PMID34073290
PMCPMC8161437

What OpenQuestion holds

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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.