Evidence map›Paper›PMID 33627724›Full record

ArticleScientific reports2021

Three-dimensional tonotopic mapping of the human cochlea based on synchrotron radiation phase-contrast imaging.

Hao Li, Luke Helpard, Jonas Ekeroot, Seyed Alireza Rohani, Ning Zhu, Helge Rask-Andersen, Hanif M Ladak, Sumit Agrawal

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 3 pooled it
8.4field-weighted citation impact, top 1% 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

50 citing papers in PubMed, 3 syntheses or guidelines pooled it, 109 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Article
  6. The Retrotympanum Revisited By a Volumetric Approach Using Synchrotron-Based X-Ray Phase-Contrast Imaging.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2026
    Article
  7. Article
  8. 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
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  11. Review
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  13. Article
  14. Chronic Auditory-Nerve Implant Enhances Brainstem Phase Locking to Electric Pulse Trains.Journal of the Association for Research in Otolaryngology : JARO · 2025
    Article
  15. Article
  16. The State of High-Resolution Imaging of the Human Inner Ear: A Look Into the Black Box.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  17. Article
  18. Article
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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

8 authors at 3 institutions in 2 countries.

Hao LiDepartment of Surgical Sciences, Section of Otolaryngology, Department of Otolaryngology, Uppsala University Hospital, 751 85, Uppsala, Sweden. hao.li@surgsci.uu.se.
Luke HelpardSchool of Biomedical Engineering, Western University, 1152 Richmond St, London, ON, N6A 3K7, Canada.
Jonas EkerootDepartment of Surgical Sciences, Section of Otolaryngology, Department of Otolaryngology, Uppsala University Hospital, 751 85, Uppsala, Sweden.
Seyed Alireza RohaniDepartment of Otolaryngology, Head and Neck Surgery, Western University, London, ON, Canada.
Ning ZhuBio-Medical Imaging and Therapy Facility, Canadian Light Source Inc., University of Saskatchewan, Saskatoon, SK, Canada.
Helge Rask-Andersen *Department of Surgical Sciences, Section of Otolaryngology, Department of Otolaryngology, Uppsala University Hospital, 751 85, Uppsala, Sweden. helge.rask-andersen@surgsci.uu.se.
Hanif M Ladak *School of Biomedical Engineering, Western University, 1152 Richmond St, London, ON, N6A 3K7, Canada.
Sumit Agrawal *School of Biomedical Engineering, Western University, 1152 Richmond St, London, ON, N6A 3K7, Canada.
Western University · CAUppsala University Hospital · SEUniversity of Saskatchewan · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The human cochlea transforms sound waves into electrical signals in the acoustic nerve fibers with high acuity. This transformation occurs via vibrating anisotropic membranes (basilar and tectorial membranes) and frequency-specific hair cell receptors. Frequency-positions can be mapped within the cochlea to create a tonotopic chart which fits an almost-exponential function with lowest frequencies positioned apically and highest frequencies positioned at the cochlear base (Bekesy 1960, Greenwood 1961). To date, models of frequency positions have been based on a two-dimensional analysis with inaccurate representations of the cochlear hook region. In the present study, the first three-dimensional frequency analysis of the cochlea using dendritic mapping to obtain accurate tonotopic maps of the human basilar membrane/organ of Corti and the spiral ganglion was performed. A novel imaging technique, synchrotron radiation phase-contrast imaging, was used and a spiral ganglion frequency function was estimated by nonlinear least squares fitting a Greenwood-like function (F = A (10

Indexed as

Acoustic StimulationBasilar MembraneCochlear ImplantationCochlear ImplantsHumansSpiral GanglionSynchrotronsTectorial MembraneVibration

Identifiers

PMID33627724
PMCPMC7904830
OpenAlexW3129595575

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.