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[Voice onset time in Friedreich dysarthria]
M Ouellon1, J Ryalls, J Lebeuf
1Ecole d'orthophonie et d'audiologie, Faculté de Médecine, Université de Montréal, Québec, Canada.
Folia Phoniatrica
|January 1, 1991
Summary
French speakers with Friedreich's ataxia showed reduced differences in voice onset time (VOT) for voiced and voiceless stops, with significant variability between individuals. These findings may inform therapeutic strategies.
Area of Science:
- Speech production
- Phonetics
- Neurology
Context:
- Investigates voice onset time (VOT) in French speakers with Friedreich's ataxia.
- Analyzes spontaneous speech samples to assess articulation.
- Compares VOT values to established data for the French language.
Purpose:
- To measure and analyze VOT in voiced and voiceless occlusives.
- To identify alterations in VOT production due to Friedreich's ataxia.
- To explore potential therapeutic applications of VOT analysis.
Summary:
- VOT measurements in 16 French speakers with Friedreich's ataxia revealed expected positive values for voiceless stops and negative values for voiced stops.
- A notable finding was the reduced difference between VOT values for voiced and voiceless stops, alongside significant between-subject variability.
- Factors contributing to this variability and reduced differentiation are discussed.
Impact:
- Highlights potential speech production impairments in Friedreich's ataxia.
- Suggests that VOT analysis could serve as a biomarker for the condition.
- Proposes avenues for incorporating VOT assessment into speech therapy interventions for affected individuals.