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An electromyographic study of the musculus uvulae
D P Kuehn1, J W Folkins, R N Linville
1Department of Speech and Hearing Science, University of Illinois, Champaign.
The Cleft Palate Journal
|October 1, 1988
Summary
Electromyography (EMG) revealed similar muscle activity patterns between the musculus uvulae and levator veli palatini. These findings suggest the musculus uvulae plays a role in velopharyngeal function and velum stiffness.
Area of Science:
- Anatomy
- Physiology
- Biomechanics
Background:
- The velopharyngeal mechanism is crucial for speech and swallowing.
- The musculus uvulae's function has been less understood compared to the levator veli palatini.
Purpose of the Study:
- To investigate the electromyographic (EMG) activity of the musculus uvulae and levator veli palatini.
- To compare muscle activation patterns during various tasks.
- To elucidate the functional role of the musculus uvulae in velopharyngeal function.
Main Methods:
- Electromyography (EMG) was used to record muscle activity.
- Studies were conducted on three healthy young adult subjects.
- EMG patterns were analyzed during non-speech tasks.
Main Results:
- Musculus uvulae and levator veli palatini exhibited similar EMG activity patterns across subjects.
- Differences in EMG activity were observed only during non-speech tasks.
- The musculus uvulae may contribute to sealing the velopharyngeal port.
Conclusions:
- The musculus uvulae demonstrates functional similarities to the levator veli palatini.
- The musculus uvulae likely contributes to velum stiffness and extension.
- Its presence aids in achieving velopharyngeal closure.