Laryngeal Adduction in Resonant Voice

Venue

Journal of Voice, vol. 12(3), pp. 315 - 327

Publication Year

1998

Keywords

Resonant voice

Identifiers

Authors

  • Katherine Verdolini
  • David G. Druker
  • Phyllis M. Palmer
  • Hani Samawi

Abstract

Summary The primary question in this study was whether subjects with nodules and subjects with healthy larynges would produce “resonant voice\dbend? with a similar laryngeal configuration. A second question regarded whether the electroglottographic closed quotient (EGG CQ) could be used to noninvasively distinguish resonant from other voice types. Twelve adult singers and actors served as subjects, including 6 persons with healthy larynges and 6 persons with nodules. Performers were used as an attempt to maximize token validity and stability. Subjects produced repeated tokens of resonant, pressed, normal, and breathy voice during sustained vowels. Laryngeal adduction was directly estimated using blinded, ordinal, visual-perceptual ratings based on videoscopic views of the larynx. {EGG} {CQs} were further calculated based on separate trials. The perceptual ratings indicated that subjects in both groups produced resonant voice with a barely adducted or barely abducted laryngeal configuration that was distinct from configurations for pressed and breathy (but not normal) voice. Previous literature suggests that this configuration may be relevant in many cases of voice therapy (I). Average {CQs} distinguished resonant from pressed voice, but inconsistently distinguished resonant from breathy voice. Further {CQs} were reliably different across healthy subjects and subjects with nodules. Thus, the utility of this measure to noninvasively estimate resonant voice may be limited, particularly without ongoing subject-specific calibration procedures.

Source Materials