The Effect of Lung Volume on Selected Phonatory and Articulatory Variables

Keywords

Respiration, voice/phonation, articulation, kinematics

Abstract

The purpose of the study was to examine the effects of manipulating lung volume (LV) on phonatory and articulatory kinematic behavior during sentence production in healthy adults. Five men and five women repeated the sentence "I sell a sapapple again" under five LV conditions. These included (1) speaking normally, (2) speaking after exhaling most of the air from the lungs, (3) speaking at end expiratory level (EEL), (4) speaking after a maximal inhalation, and (5) speaking after a maximal inhalation while attempting to maintain as normal a mode of speech as possible. From a multichannel recording, measures were made of LV, sound pressure level (SPL), fundamental frequency (F0) and semitone standard deviation (STSD), and upper and lower lip displacements and peak velocities. When compared with the reference condition, the sentence was spoken significantly more quickly at the lowest LV. SPL increased significantly for the high LV condition, as did the women's F0 and STSD. Upper lip displacements and peak velocities generally decreased for LVs other than the reference condition. Lower lip movements showed inconsistent changes as a function of LV. Adjustments to the LV for speech led to SPL and F0 changes consistent with a coordinated control of the respiratory system and the larynx. However, less consistent effects were observed in the articulatory kinematic measures, possibly because of a less direct biomechanical and neural control linkage between respiratory and articulatory structures.

Original Publication Citation

Dromey, C. & Ramig, L.O. (1999). A response to Warren re: The effect of lung volume on selected phonatory and articulatory variables. Journal of Speech, Language and Hearing Research, 42, 620.

Document Type

Peer-Reviewed Article

Publication Date

1999

Publisher

Journal of Speech, Language, and Hearing Research

Language

English

College

David O. McKay School of Education

Department

Communication Disorders

University Standing at Time of Publication

Full Professor

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