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Related Experiment Videos

Sulcus vocalis: functional aspects.

M Hirano1, T Yoshida, S Tanaka

  • 1Department of Otolaryngology-Head and Neck Surgery, Kurume University, Japan.

The Annals of Otology, Rhinology, and Laryngology
|September 1, 1990
PubMed
Summary
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This study found that sulcus vocalis, a vocal fold condition, often causes mild hoarseness. Bilateral vocal fold lesions result in more severe voice impairments than unilateral ones.

Area of Science:

  • Otolaryngology
  • Speech and Language Pathology
  • Vocal Fold Pathology

Background:

  • Sulcus vocalis is a condition affecting the vocal folds.
  • Understanding its impact on vocal function is crucial for diagnosis and treatment.

Purpose of the Study:

  • To evaluate the vocal function of patients with sulcus vocalis.
  • To compare the effects of unilateral versus bilateral sulcus vocalis lesions.

Main Methods:

  • A test battery of multidimensional evaluation items was used.
  • 126 patients with sulcus vocalis (31 unilateral, 95 bilateral) were assessed.
  • Stroboscopic examination was performed.

Main Results:

  • Most patients exhibited mild hoarseness with a breathy quality.

Related Experiment Videos

  • Stroboscopy revealed incomplete glottic closure, reduced vibratory amplitude, and mucosal wave.
  • Phonation time, frequency range, and sound pressure level were decreased; airflow increased.
  • Increased pitch and amplitude perturbation quotients, and normalized noise energy were observed.
  • Bilateral lesions showed more frequent and marked abnormalities compared to unilateral lesions.

    • Conclusions:

    • Sulcus vocalis significantly impacts vocal function, often leading to breathy hoarseness.
    • The severity of vocal dysfunction is greater in cases of bilateral sulcus vocalis compared to unilateral cases.