Evidence map›Paper›PMID 29291948›Full record

ReviewHearing research2018

Olivocochlear efferents: Their action, effects, measurement and uses, and the impact of the new conception of cochlear mechanical responses.

John J Guinan

Open access · greenAbstract readReview
In one paragraph

Review in Hearing research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers.

0numbers the graph read from it
0cells of the map it votes in
89citing papers in PubMed
7.5field-weighted citation impact, top 2% 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

89 citing papers in PubMed, 178 citations in OpenAlex.

  1. Pain Enhances the Auditory P2 but Attenuates Mismatch Response and P3a.European journal of pain (London, England) · 2026
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  14. The Medial Olivocochlear Efferent Pathway Potentiates Cochlear Amplification in Response to Hearing Loss.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  15. Lateral olivocochlear neurons modulate cochlear responses to noise exposure.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  16. Article
  17. Review
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29 more citing papers are in PubMed but not listed here.

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

1 author at 1 institution in 1 country.

John J GuinanEaton-Peabody Lab, Mass. Eye and Ear Infirmary, 243 Charles St., Boston, MA 02114, USA; Harvard Medical School, Dept. of Otolaryngology, Boston, MA, USA; Speech and Hearing Bioscience and Technology Program, Division of Medical Sciences, Harvard Medical School, Boston, MA, USA. Electronic address: jjg@epl.meei.harvard.edu.
Massachusetts Eye and Ear Infirmary · US

Funding

Three-dimensional and Multiscale Organ of Corti BiomechanicsR01DC007910 · NIDCD · STANFORD UNIVERSITY · PI Sunil Puria · 2007 to 2026
$9.4M
DESCENDING SYSTEMS TO THE COCHLEA AND COCHLEAR NUCLEUSR01DC001089 · NIDCD · MASSACHUSETTS EYE AND EAR INFIRMARY · PI BROWN, M. CHRISTIAN · 1991 to 2019
$5.9M
Olivocochlear Reflex in HumansR01DC005977 · NIDCD · MASSACHUSETTS EYE AND EAR INFIRMARY · PI GUINAN, JOHN J · 2003 to 2013
$2.8M
OLIVOCOCHLEAR EFFERENT SYSTEMS AND COCHLEAR PHYSIOLOGYR01DC000235 · NIDCD · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI GUINAN, JOHN J · 1988 to 2012
$2.8M
NIDCD NIH HHS R01 DC000235NIDCD NIH HHS R01 DC001089NIDCD NIH HHS R01 DC005977NIDCD NIH HHS R01 DC007910
6 · The paper itself

Abstract

The anatomy and physiology of olivocochlear (OC) efferents are reviewed. To help interpret these, recent advances in cochlear mechanics are also reviewed. Lateral OC (LOC) efferents innervate primary auditory-nerve (AN) fiber dendrites. The most important LOC function may be to reduce auditory neuropathy. Medial OC (MOC) efferents innervate the outer hair cells (OHCs) and act to turn down the gain of cochlear amplification. Cochlear amplification had been thought to act only through basilar membrane (BM) motion, but recent reports show that motion near the reticular lamina (RL) is amplified more than BM motion, and that RL-motion amplification extends to several octaves below the local characteristic frequency. Data on efferent effects on AN-fiber responses, otoacoustic emissions (OAEs) and human psychophysics are reviewed and reinterpreted in the light of the new cochlear-mechanical data. The possible origin of OAEs in RL motion is considered. MOC-effect measuring methods and MOC-induced changes in human responses are also reviewed, including that ipsilateral and contralateral sound can produce MOC effects with different patterns across frequency. MOC efferents help to reduce damage due to acoustic trauma. Many, but not all, reports show that subjects with stronger contralaterally-evoked MOC effects have better ability to detect signals (e.g. speech) in noise, and that MOC effects can be modulated by attention.

Indexed as

Auditory PerceptionHearingMechanotransduction, CellularAcoustic StimulationAnimalsAttentionCochleaCochlear NerveEfferent PathwaysHumansNoiseOlivary NucleusPerceptual MaskingSignal Detection, PsychologicalSpeech PerceptionAttentionCochlear mechanicsMedial olivocochlear efferentsOtoacoustic emissions

Identifiers

PMID29291948
PMCPMC5911200
OpenAlexW2779724718

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.