Syllable structure, syllable duration and final lengthening in Parkinsonian French speech

Duez, Danielle

doi:10.1080/14769670500485513

Cited by 18 publications

(16 citation statements)

References 27 publications

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“…The abnormal speech rate has also been observed with diverging results during tasks used to elicit and evaluate continuous speech (usually reading tasks, as in the studies by Canter, 1963 ; Gräber et al, 2002 ; Martínez-Sánchez et al, 2016 ). Other studies, however, have found no intergroup differences between patients with PD and healthy individuals both in speech rate (Duez, 2006a , b ) and in articulation rate (Skodda and Schlegel, 2008 ).…”

Section: Introductionmentioning

confidence: 73%

Speech Rhythm Variation in Early-Stage Parkinson's Disease: A Study on Different Speaking Tasks

et al. 2021

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Patients with Parkinson's disease (PD) usually reveal speech disorders and, among other symptoms, the alteration of speech rhythm. The purpose of this study is twofold: (1) to test the validity of two acoustic parameters—%V, vowel percentage and VtoV, the mean interval between two consecutive vowel onset points—for the identification of rhythm variation in early-stage PD speech and (2) to analyze the effect of PD on speech rhythm in two different speaking tasks: reading passage and monolog. A group of 20 patients with early-stage PD was involved in this study and compared with 20 age- and sex-matched healthy controls (HCs). The results of the acoustic analysis confirmed that %V is a useful cue for early-stage PD speech characterization, having significantly higher values in the production of patients with PD than the values in HC speech. A simple speaking task, such as the reading task, was found to be more effective than spontaneous speech in the detection of rhythmic variations.

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Section: Introductionmentioning

confidence: 73%

Speech Rhythm Variation in Early-Stage Parkinson's Disease: A Study on Different Speaking Tasks

et al. 2021

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“…Several studies have reported a complex effect of PD on consonant and vowel duration. Despite the general agreement on shorter consonant durations in PD as compared to HC [ 27 – 29 ], vowel duration has been reported as shorter [ 29 ], longer [ 13 , 30 ] or similar [ 31 ] to healthy controls. Careful examination suggests that the inconsistency may come from heterogeneity of speech characteristics (particularly, speech rate of the PD group and segment type (e.g., articulation manner/place) and perhaps variation of speech severity across studies.…”

Section: Discussionmentioning

confidence: 99%

Acoustic Characteristics of Fricatives /s/ and /∫/ Produced by Speakers with Parkinson’s Disease

Kim¹

2017

Clin Arch Commun Disord

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PurposeThis study investigated acoustic characteristics of fricatives produced in a repeated syllables task by speakers with Parkinson’s disease (PD), focusing on temporal, intensity, and spectral moment analyses.MethodsTen participants with PD and nine neurologically-healthy participants were asked to repeat the two words, sigh and shy, ten times in a row and at a comfortable rate. Acoustic measurements were made for duration and intensity of each fricative and vowel, plus four coefficients of spectral moments for the fricatives.ResultsResults indicated a varying effect of duration difference between group, with marginally shorter duration of fricatives but much shorter duration of vowels in speakers with PD, as compared to controls; comparable vowel-fricative intensity differences for the two groups; and for the group with PD relatively intact coarticulation throughout fricative.ConclusionsThe findings suggest considering the complex effect of overall speech rate on different kinds of segments in PD. The findings also have implications for speech stimuli in research on coarticulation.

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“…). Persons with PD produce words that are more variable in duration and shorter on average (Ackermann et al, ), although individual syllable duration may remain unchanged (Duez, ). Rats under the PD condition made shorter word calls on average, and this symptom was exacerbated by DBS (Fig.…”

Section: Discussionmentioning

confidence: 99%

Deep brain stimulation exacerbates hypokinetic dysarthria in a rat model of Parkinson's disease

King

Anderson

Dorval

2015

J of Neuroscience Research

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Motor symptoms of Parkinson's disease (PD) follow the degeneration of dopaminergic neurons in the substantia nigra pars compacta. Deep brain stimulation (DBS) treats some parkinsonian symptoms – tremor, rigidity, and bradykinesia – but may worsen certain medial motor symptoms, including hypokinetic dysarthria. The mechanisms by which DBS exacerbates dysarthria while improving other symptoms are unclear and difficult to study in human patients. In this work, we propose an animal model of DBS-exacerbated dysarthria. We used the unilateral, 6-hydroxydopamine rat model of PD to test the hypothesis that DBS exacerbates quantifiable aspects of vocalization. Mating calls were recorded from sexually-experienced male rats under healthy and parkinsonian conditions, and during DBS of the subthalamic nucleus. Relative to healthy rats, parkinsonian animals made fewer calls with shorter and less complex vocalizations. In the parkinsonian rats, putatively therapeutic DBS further reduced call frequency, duration, and complexity. Interestingly, the individual utterances of parkinsonian rats spanned a greater bandwidth than those of healthy rats, potentially reducing the effectiveness of the vocal signal. This utterance bandwidth was further increased by DBS. We propose that the parkinsonism-associated changes in call frequency, duration, complexity, and dynamic range combine to constitute a rat analog of parkinsonian dysarthria. Because DBS exacerbates the parkinsonism-associated changes in each of these metrics, the subthalamic stimulated 6-hydroxydopamine rat is a good model of DBS-induced hypokinetic dysarthria in PD. This model will help researchers examine how DBS alleviates many motor symptoms of PD, while exacerbating parkinsonian speech deficits that can greatly diminish patient quality of life.

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Syllable structure, syllable duration and final lengthening in Parkinsonian French speech

Cited by 18 publications

References 27 publications

Speech Rhythm Variation in Early-Stage Parkinson's Disease: A Study on Different Speaking Tasks

Speech Rhythm Variation in Early-Stage Parkinson's Disease: A Study on Different Speaking Tasks

Acoustic Characteristics of Fricatives /s/ and /∫/ Produced by Speakers with Parkinson’s Disease

Deep brain stimulation exacerbates hypokinetic dysarthria in a rat model of Parkinson's disease

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