Evidence map›Paper›PMID 26723319›Full record

ArticleThe Journal of the Acoustical Society of America2015

Procedures for ambient-pressure and tympanometric tests of aural acoustic reflectance and admittance in human infants and adults.

Douglas H Keefe, Lisa L Hunter, M Patrick Feeney, Denis F Fitzpatrick

Open access · greenAbstract readComparative Study
In one paragraph

Article in The Journal of the Acoustical Society of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

28 citing papers in PubMed, 43 citations in OpenAlex.

  1. Wideband acoustic immittance: Suitable quantities for assessing middle-ear status.The Journal of the Acoustical Society of America · 2026
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  7. A comparison of ear-canal-reflectance measurement methods in an ear simulator.The Journal of the Acoustical Society of America · 2019
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  8. Article
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  10. Pressurized transient otoacoustic emissions measured using click and chirp stimuli.The Journal of the Acoustical Society of America · 2018
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  11. Article
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  14. Aural Acoustic Stapedius-Muscle Reflex Threshold Procedures to Test Human Infants and Adults.Journal of the Association for Research in Otolaryngology : JARO · 2017
    Article
  15. Article
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  18. Comparisons of transient evoked otoacoustic emissions using chirp and click stimuli.The Journal of the Acoustical Society of America · 2016
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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

4 authors at 3 institutions in 1 country.

Douglas H KeefeBoys Town National Research Hospital, 555 North 30th Street, Omaha, Nebraska 68131, USA.
Lisa L HunterCincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, Ohio 45229, USA.
M Patrick FeeneyNational Center for Rehabilitative Auditory Research, VA Portland Health Care System, 3710 SW US Veterans Hospital Road, Portland, Oregon 97239, USA.
Denis F FitzpatrickBoys Town National Research Hospital, 555 North 30th Street, Omaha, Nebraska 68131, USA.
Boys Town National Research Hospital · USCincinnati Children's Hospital Medical Center · USVA Portland Health Care System · US

Funding

Research Synergy CoreP30DC004662 · NIDCD · FATHER FLANAGAN'S BOYS' HOME · PI MOELLER, MARY PAT, MORLEY, BARBARA J · 2001 to 2015
$5.9M
WIDEBAND CLINICAL DIAGNOSIS AND MONITORING OF MIDDLE-EAR AND COCHLEAR FUNCTIONR01DC010202 · NIDCD · FATHER FLANAGAN'S BOYS' HOME · PI FEENEY, MARTIN PATRICK, HUNTER, LISA LEIGH · 2009 to 2013
$3.9M
NIDCD NIH HHS P30 DC004662NIDCD NIH HHS R01 DC010202
6 · The paper itself

Abstract

Procedures are described to measure acoustic reflectance and admittance in human adult and infant ears at frequencies from 0.2 to 8 kHz. Transfer functions were measured at ambient pressure in the ear canal, and as down- or up-swept tympanograms. Acoustically estimated ear-canal area was used to calculate ear reflectance, which was parameterized by absorbance and group delay over all frequencies (and pressures), with substantial data reduction for tympanograms. Admittance measured at the probe tip in adults was transformed into an equivalent admittance at the eardrum using a transmission-line model for an ear canal with specified area and ear-canal length. Ear-canal length was estimated from group delay around the frequency above 2 kHz of minimum absorbance. Illustrative measurements in ears with normal function are described for an adult, and two infants at 1 month of age with normal hearing and a conductive hearing loss. The sensitivity of this equivalent eardrum admittance was calculated for varying estimates of area and length. Infant-ear patterns of absorbance peaks aligned in frequency with dips in group delay were explained by a model of resonant canal-wall mobility. Procedures will be applied in a large study of wideband clinical diagnosis and monitoring of middle-ear and cochlear function.

Indexed as

Acoustic Impedance TestsAcousticsHearingSoundAcoustic StimulationAdultAge FactorsAir PressureEar CanalHearing Loss, ConductiveHumansInfantMaleModels, BiologicalMotionPredictive Value of Tests

Identifiers

PMID26723319
PMCPMC4684573
OpenAlexW2208688368

What OpenQuestion holds

Textmetadata
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.