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Exploring Biomechanical Correlates in Voice Analysis of Multiple Sclerosis Patients
Tatiana Romero-Arias1,2, Rocío Hernández-Velasco3, Moisés Betancort4
1Facultad de Ciencias de la Salud, Universidad Europea de Canarias, Santa Cruz, Spain.
Summary
Multiple sclerosis (MS) patients often experience voice problems like instability and hoarseness. This study found objective biomechanical voice alterations, correlating with subjective vocal disability, particularly in women.
Area of Science:
- Neurology
- Speech-Language Pathology
- Acoustic Analysis
Background:
- Multiple sclerosis (MS) commonly causes voice alterations including phonatory instability, vocal asthenia, roughness, hypophonia, and hypernasality.
- Limited research exists on acoustic parameters in MS, with conflicting findings.
- Investigating voice disturbances in MS requires both objective biomechanical and subjective assessments.
Purpose of the Study:
- To investigate voice disturbances in patients with multiple sclerosis (MS).
- To analyze objective biomechanical voice parameters.
- To correlate objective findings with subjective patient-reported outcomes.
Main Methods:
- Experimental study involving 20 participants with MS.
- Voice samples analyzed using Clinical Voice Systems program (Online Lab App) for biomechanical correlates.
- Subjective measures included the Voice Handicap Index (VHI-30), GRBAS scale, and Hospital Anxiety and Depression Scale.
Main Results:
- 95% of participants reported dysphonic difficulties.
- A correlation was observed between self-perceived vocal disability and auditory-vocal perceptual analysis in female participants.
- Biomechanical analysis revealed alterations in glottic closure strength, efficiency index, and structural imbalance index.
Conclusions:
- Biomechanical voice analysis in MS patients identified specific alterations.
- Subjective vocal complaints align with objective acoustic findings.
- Further research is needed to understand the full spectrum of voice disorders in MS.
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