Muscle Tension Dysphonia in Vietnamese Female Teachers

Nguyen, Duong Duy; Kenny, Dianna T.; Tran, Ninh Duy; Livesey, J. R.

doi:10.1016/j.jvoice.2007.09.003

Cited by 29 publications

(16 citation statements)

References 18 publications

(16 reference statements)

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“…This intensive exploitation of the phonation system might be a factor predisposing to hyperfunctional phonation in certain situations and result in frequent muscle tension dysphonia [Nguyễn and Kenny, 2009a, b, c;Nguyễn et al, 2009].…”

Section: Resultsmentioning

confidence: 99%

“…However, their production has not been investigated as exhaustively as their acoustics and perception, despite a few solid articulatory studies [Nguyễn and Edmondson, 1997;Michaud, 2004a;Vũ et al, 2005;Michaud et al, 2006;Nguyễn et al, 2009]. The goal of the present study is to try to provide a more complete picture of the production of Northern Vietnamese tones by combining results from laryngography and laryngoscopy.…”

Section: Research Questions: the Production Of F0 And Voice Quality Imentioning

confidence: 99%

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A Laryngographic and Laryngoscopic Study of Northern Vietnamese Tones

Brunelle

Nguyên

2010

Phonetica

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A laryngographic and laryngoscopic study of tone production in Northern Vietnamese, a language whose tones combine both fundamental frequency (f0) modulations and voice qualities (phonation types), was conducted with 5 male and 5 female speakers. Results show that the f0 contours of Northern Vietnamese tones are not only attributable to changes in vocal fold length and tension (partly through changes in larynx height), but that f0 drops are also largely caused by the glottal configurations responsible for the contrastive voice qualities associated with some of the tones. We also find that voice quality contrasts are mostly due to glottal constriction: they occasionally involve additional ventricular fold incursion and epiglottal constriction, but these articulations are usually absent.

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Section: Resultsmentioning

confidence: 99%

Section: Research Questions: the Production Of F0 And Voice Quality Imentioning

confidence: 99%

A Laryngographic and Laryngoscopic Study of Northern Vietnamese Tones

Brunelle

Nguyên

2010

Phonetica

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“…Various metrics offered in ref. 30 demonstrated that MTD-diagnosed Vietnamese speakers were more likely than speakers of nontonal languages to have anomalous patterns of laryngealization during the production of tones. MTD-characteristic influences on phonation included incomplete glottal closure and impacted pitch quality (two factors that influence pitch discrimination), and the authors concluded that the tonal status of Vietnamese had an effect on the heightened expression of some MTD symptoms during speech.…”

Section: Significancementioning

confidence: 99%

Climate, vocal folds, and tonal languages: Connecting the physiological and geographic dots

Everett

Blasí

Roberts

2015

Proc. Natl. Acad. Sci. U.S.A.

145

110

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We summarize a number of findings in laryngology demonstrating that perturbations of phonation, including increased jitter and shimmer, are associated with desiccated ambient air. We predict that, given the relative imprecision of vocal fold vibration in desiccated versus humid contexts, arid and cold ecologies should be less amenable, when contrasted to warm and humid ecologies, to the development of languages with phonemic tone, especially complex tone. This prediction is supported by data from two large independently coded databases representing 3,700+ languages. Languages with complex tonality have generally not developed in very cold or otherwise desiccated climates, in accordance with the physiologically based predictions. The predicted global geographic-linguistic association is shown to operate within continents, within major language families, and across language isolates. Our results offer evidence that human sound systems are influenced by environmental factors.climate | language | adaptation | tone A standard assumption in linguistics is that sound systems are immune to ecological effects (1). This presumption has been called into question by several recent studies providing evidence for a correlation between aspects of phonology (such as sonority) and climatic and geographic factors (such as temperature, plant cover, or terrain), as well as behaviors associated with such factors (2-9). Most recently, a correlation was uncovered between ejective sounds and regions of high elevation in a sample of nearly 600 languages (10). Although two plausible physiological motivations are offered in ref. 10 for the correlation between ejective use and reduced ambient air pressure, those explanations have yet to be supported by experimental evidence. The uncovered patterns could be epiphenomenal, and in general, the cross-linguistic statistical studies in question have not been buttressed by experimental support (11).In this study, we offer evidence for a negative correlation between linguistic tone and characteristic rates of desiccation in ambient air. In contradistinction to the aforementioned studies offering geographic/phonetic correlations, however, we suggest this correlation is predicted by extensive experimental research on the properties of the human larynx. This research, which has been conducted by numerous laryngologists over the last decade and a half, has not been previously tied to the distribution of the world's tonal languages. We submit that the research predicts that the relatively precise manipulation of the vocal folds associated with tone, especially complex tone, should be more difficult to achieve in arid climates-particularly very cold ones-when contrasted to warmer and more humid climates. We offer global, continental, and intralinguistic-family data consistent with the expected geographic/tonemic association. Our results cannot facilely be ascribed to well-known phylogenetic and areal relatedness. We conclude by suggesting that the most reasonable interpretation of the data is that the a...

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“…This may result in a failure in the conveyance of lexical information intended by the teacher. Nguyen et al 14 found that vocal characteristics of MTD in NV female teachers were different from those previously reported in nontonal language speakers; they had more vocal symptoms, although some symptoms reported in nontonal language speakers were not present. In this study, we investigated whether and how MTD in NV teachers interfered with tone phonation.…”

Section: Introductionmentioning

confidence: 82%