Production ability for Korean bilabial stops in Parkinson's disease

Park, Sunghea; Sim, Hyunsub; Baik, Jong Sam

doi:10.1080/14769670500066503

Cited by 3 publications

(5 citation statements)

References 9 publications

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“…Fischer and Goberman [40] noted no group differences in VOT length between the hypokinetic dysarthria English speakers and the normal English speakers. Similarly, Park [41] reported Korean children with cerebral palsy showed a longer closure duration and a longer syllable segment duration than the normal group, but there was no statistically significant difference in VOT. Thus, based on these previous and current study findings, it was speculated that despite the motor speech disorder, the speakers with dysarthria still tried to maintain a VOT length close to normal levels.…”

Section: Discussionmentioning

confidence: 84%

“…Compared to normal speakers, English speakers with hypokinetic dysarthria produced a reduced contrast in VOT between voiced and voiceless stops [36,37]. A reduced VOT contrast was also observed among Korean stops at bilabial placement [38] and at alveolar placement [39] when they were produced by speakers with Parkinson's disease (i.e., hypokinetic dysarthria speakers). In contrast, Fischer and Goberman [40] noted no group differences in the VOT length between hypokinetic dysarthria English speakers and normal English speakers.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, Fischer and Goberman [40] noted no group differences in the VOT length between hypokinetic dysarthria English speakers and normal English speakers. Similarly, while Korean children with cerebral palsy showed longer closure duration and longer syllable segment duration than those in the normal group, there was no significant difference in the VOT [41]. Lee [10], who investigated the VOT of adults with cerebral palsy, observed longer VOT in those in the more severe group than those in a milder group.…”

Section: Introductionmentioning

confidence: 99%

“…Overall, the hypokinetic dysarthria group tended to show the slowest responses in tongue and lip movement, while the ataxic dysarthria group showed relatively fast responses. Likewise, Park [41] concluded that Parkinson's disease patients tended to show slowed lip and tongue movement resulting in significantly shortened closure duration, significantly prolonged aspiration duration, and significantly reduced ratio of closure duration to closure and aspiration combined duration.…”

Section: Introductionmentioning

confidence: 99%

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Acoustic analysis of Korean stop sounds in patients with dysarthrias

Kim¹,

Kim²

2019

Clin Arch Commun Disord

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Dysarthria is a motor speech disorder that occurs due to abnormalities in the central and/or peripheral nervous system. The speed, strength, range, steadiness, and tone of motor speech behaviors are affected by the abnormal performances of nerve fibers and muscles [1,2]. This disorder is known to influence five speech components, including respiration, phonation, articulation, prosody, and resonance [1,2]. Because all phonemes in the language are influenced by the disorder, the overall intelligibility, rather than the percentage of correctly produced consonants, has been of interest to both clinicians and researchers."Speech intelligibility" is a measurement that scores how much listeners can under-Purpose: Korean 'stops' are considered an especially good acoustic variable since they are sensitive to speech intelligibility and reflect physiological coordination between laryngeal and supra-laryngeal mechanisms. The purpose of the study was to evaluate the acoustic characteristics of both the dysarthria and control groups in the production of nine Korean stops, /p, p', p h , t, t', t h , k, k', k h /, in VCV contexts. Methods:The participants comprised eight patients with dysarthria and eight age-and gender-matched normal adults. After the acoustic analysis of the closure duration, aspiration duration, and the ratio of closure duration to closure-aspiration combined duration, the results were compared among three types of phonation and places of articulation for Korean stops.Results: The dysarthria group (DG) had longer closure durations, suggesting slower articulatory movements of the DG than the normal control group (NC). Although statistically not significant except for /ap'a/ and /at'a/, the absolute aspiration durations of the DG were still longer than those of the NC. This resulted in the normal levels of ratios in the DG between closure duration and closure-aspiration combined durations. Furthermore, the DG could change the durational aspects of stop production distinctively according to types of phonation more than they could according to the places of articulation. This trend was more prominent during the closure duration than during the aspiration duration.Conclusions: This finding suggested that while the DG has centralized tongue positions, they control the tenseness and the timing coordination between laryngeal and supra-laryngeal articulators to distinctively produce different types of phonation of stops.

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Section: Discussionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Acoustic analysis of Korean stop sounds in patients with dysarthrias

Kim¹,

Kim²

2019

Clin Arch Commun Disord

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“…The contrast between voiced and voiceless VOT in AE has been reported to be reduced in speakers with PD compared with controls (Morris, 1989;Weismer, 1984) or statistically equivalent between Englishspeaking groups (Fischer & Goberman, 2010). In Korean, there is evidence for reduction of the three-way VOT contrast for bilabial (Park, Sim, & Baik, 2005) and alveolar stops (Kang, Kim, Ban, & Seoung, 2009) when speakers with PD are compared with healthy controls (see Table 5 for raw VOT values).…”

Section: Within Language Across Groupmentioning

confidence: 99%