11. Paradoxical vocal fold movement ( PVFM ) is also treated medically and behaviorally. 12. Glottal insufficiency is another common symptom observed in vocal fold paresis. 13. The primary perceptual sign of vocal fold cysts is hoarseness of the voice. 14. In this case, the vocal folds do not come together properly. 15. Speech quality includes thick vocal folds and a neutral larynx position. 16. Vocal fold phonatory functions are known to change from birth to old age.17. In normal speech, the vocal folds alternate between states of voice and voicelessness. 18. She afterwards discovered a vocal fold cyst, and had to undergo corrective surgery. 19. Vocal folds are found only in mammals, and a few lizards.20. The false vocal folds are not responsible for sound production, but rather for resonance.
