Evidence map›Paper›PMID 33752927›Full record

ArticleJournal of voice : official journal of the Voice Foundation2023

Impact of the Paraglottic Space on Voice Production in an MRI-Based Vocal Fold Model.

Liang Wu, Zhaoyan Zhang

Open access · greenAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of voice : official journal of the Voice Foundation, 2023. 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
1.1field-weighted citation impact, top 24% 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, 13 citations in OpenAlex.

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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

2 authors at 1 institution in 1 country.

Liang WuDepartment of Head and Neck Surgery, University of California, Los Angeles, California.
Zhaoyan ZhangDepartment of Head and Neck Surgery, University of California, Los Angeles, California. Electronic address: zyzhang@ucla.edu.
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
Biomechanical Mechanisms of PhonationR01DC011299 · NIDCD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI ZHANG, ZHAOYAN · 2011 to 2015
$2.4M
NIDCD NIH HHS R01 DC001797NIDCD NIH HHS R01 DC009229NIDCD NIH HHS R01 DC011299
6 · The paper itself

Abstract

objectiveWhile the vocal fold is in direct contact anteriorly with the thyroid cartilage, posteriorly the vocal fold connects to the thyroid cartilage through a soft tissue layer in the paraglottic space. Currently the paraglottic space is often neglected in computational models of phonation, in which a fixed boundary condition is often imposed on the lateral surface of the vocal fold. The goal of this study was to investigate the effect of the paraglottic space on voice production in an MRI-based vocal fold model, and how this effect may be counteracted by vocal fold stiffening due to laryngeal muscle activation.

methodsParametric simulation study using an MRI-based computational vocal fold model.

resultsThe results showed that the presence of the paraglottic space increased the mean and amplitude of the glottal area waveform, decreased the phonation frequency and closed quotient. For the particular vocal fold geometry used in this study, the presence of the paraglottic space also reduced the occurrence of irregular vocal fold vibration. These effects of the paraglottic space became smaller with increasing paraglottic space stiffness and to a lesser degree with vocal fold stiffening.

conclusionsThe results suggest that the paraglottic space may be neglected in qualitative evaluations of normal phonation, but needs to be included in simulations of pathological phonation or vocal fold posturing.

Indexed as

Vocal CordsVoiceGlottisHumansMagnetic Resonance ImagingPhonationVibrationcomputational modellateral boundary conditionMRI-based geometryParaglottic space

Identifiers

PMID33752927
PMCPMC8449798
OpenAlexW3138664566

What OpenQuestion holds

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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.