Evidence map›Paper›PMID 34598628›Full record

ArticleThe Journal of the Acoustical Society of America2021

Vocal tract adjustments to minimize vocal fold contact pressure during phonation.

Zhaoyan Zhang

Open access · greenAbstract read
In one paragraph

Article in The Journal of the Acoustical Society of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.2field-weighted citation impact, top 46% 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

8 citing papers in PubMed, 7 citations in OpenAlex.

  1. Article
  2. Vocal Fold Vibratory Kinematics and Acoustic Correlates in Pressed and Breathy Phonation.Journal of speech, language, and hearing research : JSLHR · 2026
    Article
  3. Article
  4. Article
  5. Article
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  7. Review
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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

1 author at 1 institution in 1 country.

Zhaoyan ZhangDepartment of Head and Neck Surgery, Los Angeles 31-24 Rehabilitation Center, University of California, 1000 Veteran Avenue, Los Angeles, California 90095-1794, USA.
University of California, Los Angeles · US

Funding

TOWARD STANDARDIZING PERCEPTUAL VOICE-QUALITY MEASURESR01DC001797 · NIDCD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KREIMAN, JODY E, ZHANG, ZHAOYAN · 1993 to 2020
$10.3M
Sound Sources of PhonationR01DC009229 · NIDCD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI BERKE, GERALD S., ZHANG, ZHAOYAN · 2008 to 2017
$4.5M
NIDCD NIH HHS R01 DC001797NIDCD NIH HHS R01 DC009229
6 · The paper itself

Abstract

This computational study aims to identify vocal tract adjustments that minimize the peak vocal fold contact pressure during phonation and thus should be targeted in voice therapy treating phonotraumatic vocal hyperfunction. The results showed that for a given subglottal pressure, the effect of vocal tract adjustments on the peak vocal fold contact pressure was generally small except when such adjustments caused noticeable changes in the glottal flow amplitude. In this study, this occurred mainly when the lip opening was reduced and at conditions of large initial glottal angles or high subglottal pressures, which decreased the peak contact pressure but also significantly reduced the output sound pressure level (SPL). On the other hand, increasing lip opening significantly increased sound radiation efficiency from the mouth and reduced the subglottal pressure required to produce a target SPL. Because of the large effect of the subglottal pressure on the peak contact pressure, increasing lip opening thus was able to significantly reduce the peak contact pressure in voice tasks targeting a specific SPL. In contrast, the effect of pharyngeal expansion alone had only a small effect on the peak contact pressure, whether controlling for the subglottal pressure or targeting a specific SPL.

Indexed as

Vocal CordsVoiceGlottisPhonation

Identifiers

PMID34598628
PMCPMC8425986
OpenAlexW3196519807

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.