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[Detection of latent velopharyngeal hyperfunction with the Lombard trial]
Laryngologie, Rhinologie, Otologie
|November 1, 1984
Summary
Patients with voice disturbances may develop hyponasal speech under Lombard conditions due to habitual velopharyngeal hyperfunction. This response can aid in diagnosing and treating functional voice disorders.
Area of Science:
- Speech-Language Pathology
- Acoustic Analysis
- Physiology
Context:
- Investigates the impact of auditory feedback loss on speech production.
- Examines vocal responses under simulated noisy environments (Lombard conditions).
- Focuses on patients with pre-existing voice disturbances.
Purpose:
- To determine the prevalence and characteristics of hyponasal speech in patients under Lombard conditions.
- To elucidate the underlying mechanism of velopharyngeal hyperfunction in response to auditory deprivation.
- To assess the diagnostic and therapeutic utility of the Lombard effect in functional voice disorders.
Summary:
- A significant percentage (17.7%) of patients with voice disturbances exhibited hyponasal speech when subjected to Lombard conditions.
- Sonagraphic analysis confirmed the presence of hyponasality, attributed to habitual velopharyngeal hyperfunction compensating for auditory feedback loss.
- Kinesthetic and reflex mechanisms appear to play a role in this compensatory response.
Impact:
- The Lombard effect procedure can serve as a valuable diagnostic tool for identifying functional components in voice disorders.
- This method shows potential as a therapeutic intervention for functional voice disturbances.
- Highlights the interplay between auditory feedback and velopharyngeal function in speech production.