Chest Wall Movements Prior to Phonation Movements of the chest wall during the interval between an acoustic stimulus and the subject’s vocal response were examined and timed in eight normal males. The reaction-time interval was divisible into two phases, a latency period with duration independent on chest wall status at the time of stimulus and an ... Research Article
Research Article  |   December 01, 1979
Chest Wall Movements Prior to Phonation
 
Author Affiliations & Notes
  • R. J. Baken
    Teachers College, Columbia University, New York, N.Y.
  • Stephen A. Cavallo
    Teachers College, Columbia University, New York, N.Y.
  • Kenneth L. Weissman
    Teachers College, Columbia University, New York, N.Y.
Article Information
Research Articles
Research Article   |   December 01, 1979
Chest Wall Movements Prior to Phonation
Journal of Speech, Language, and Hearing Research, December 1979, Vol. 22, 862-872. doi:10.1044/jshr.2204.862
History: Received October 16, 1978 , Accepted December 19, 1978
 
Journal of Speech, Language, and Hearing Research, December 1979, Vol. 22, 862-872. doi:10.1044/jshr.2204.862
History: Received October 16, 1978; Accepted December 19, 1978

Movements of the chest wall during the interval between an acoustic stimulus and the subject’s vocal response were examined and timed in eight normal males. The reaction-time interval was divisible into two phases, a latency period with duration independent on chest wall status at the time of stimulus and an adjustment period during which the rib cage and abdomen usually moved oppositionally to achieve a prephonatory postural set. The time required for this adjustment varied significantly with lung volume, but was independent of the ventilatory phase previously in progress.

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