Evidence map›Paper›PMID 21568413›Full record

ArticleThe Journal of the Acoustical Society of America2011

The breaking of cochlear scaling symmetry in human newborns and adults.

Carolina Abdala, Sumitrajit Dhar, Srikanta Mishra

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of the Acoustical Society of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.9field-weighted citation impact, top 34% 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

17 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
  2. Optimal Scale-Invariant Wavelet Representation and Filtering of Human Otoacoustic Emissions.Journal of the Association for Research in Otolaryngology : JARO · 2024
    Review
  3. Swept Along: Measuring Otoacoustic Emissions Using Continuously Varying Stimuli.Journal of the Association for Research in Otolaryngology : JARO · 2024
    Review
  4. Article
  5. Article
  6. Article
  7. Morphological Immaturity of the Neonatal Organ of Corti and Associated Structures in Humans.Journal of the Association for Research in Otolaryngology : JARO · 2019
    Article
  8. Article
  9. Article
  10. Distortion-Product Otoacoustic Emission Measured Below 300 Hz in Normal-Hearing Human Subjects.Journal of the Association for Research in Otolaryngology : JARO · 2017
    Article
  11. Frequency shifts in distortion-product otoacoustic emissions evoked by swept tones.The Journal of the Acoustical Society of America · 2016
    Article
  12. Article
  13. Stimulus-frequency otoacoustic emissions in human newborns.The Journal of the Acoustical Society of America · 2015
    Article
  14. Article
  15. Maturation and aging of the human cochlea: a view through the DPOAE looking glass.Journal of the Association for Research in Otolaryngology : JARO · 2012
    Article
  16. Article
  17. 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

3 authors at 2 institutions in 1 country.

Carolina AbdalaDivision of Communication and Auditory Neuroscience, House Research Institute, 2100 West Third Street, Los Angeles, California 90057, USA. cabdala@hei.org
Sumitrajit Dhar
Srikanta Mishra
House Clinic · USNorthwestern University · US

Funding

Postnatal Cochlear Maturation and Sources of ImmaturityR01DC003552 · NIDCD · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ABDALA, CAROLINA · 2003 to 2019
$5.5M
NIDCD NIH HHS R01 DC003552NIDCD NIH HHS R01 DC03552
6 · The paper itself

Abstract

Scaling symmetry appears to be a fundamental property of the cochlea as evidenced by invariant distortion product otoacoustic emission (DPOAE) phase above ∼1-1.5 kHz when using frequency-scaled stimuli. Below this frequency demarcation, phase steepens. Cochlear scaling and its breaking have been described in the adult cochlea but have not been studied in newborns. It is not clear whether immaturities in cochlear mechanics exist at birth in the human neonate. In this study, DPOAE phase was recorded with a swept-tone protocol in three, octave-wide segments from 0.5 to 4 kHz. The lowest-frequency octave was targeted with increased signal averaging to enhance signal-to-noise ratio (SNR) and focus on the apical half of the newborn cochlea where breaks from scaling have been observed. The results show: (1) the ear canal DPOAE phase was dominated by the distortion-source component in the low frequencies; thus, the reflection component cannot explain the steeper slope of phase; (2) DPOAE phase-frequency functions from adults and infants showed an unambiguous discontinuity around 1.4 and 1 kHz when described using two- and three-segment fits, respectively, and (3) newborns had a significantly steeper slope of phase in the low-frequency portion of the function which may suggest residual immaturities in the apical half of the newborn cochlea.

Indexed as

AdultCochleaFemaleHumansInfant, NewbornMaleModels, BiologicalOtoacoustic Emissions, SpontaneousPerceptual Distortion

Identifiers

PMID21568413
PMCPMC3108391
OpenAlexW1966627312

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.