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A continuous-flow model for phonatory reaction time.

C Ferrand1, G W Blood, H R Gilbert

  • 1Hofstra University, Department of Speech Arts and Sciences, Hempstead, NY 11550.

Journal of Speech and Hearing Research
|June 1, 1991
PubMed
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This study validates a continuous-flow model for phonatory reaction time, showing laryngeal and brain events occur in a specific sequence. This model offers a more accurate explanation of physiological function and temporal patterns in speech production.

Area of Science:

  • Speech Physiology
  • Neuroscience
  • Acoustic Phonetics

Background:

  • Phonatory reaction time (PRT) research traditionally uses serial models.
  • A continuous-flow model offers a potentially more accurate explanation of PRT.

Purpose of the Study:

  • To validate a continuous-flow model of phonatory reaction time.
  • To investigate the temporal order of laryngeal and neurophysiological events during a PRT task.

Main Methods:

  • Ten normal speakers performed a phonatory reaction time task.
  • Electroglottography recorded laryngeal shift and acoustic onset.
  • P300 brain potentials indexed central processing.

Main Results:

  • The temporal sequence of laryngeal shift, P300, and acoustic onset supported the continuous-flow model.

Related Experiment Videos

  • This ordering challenges traditional serial models of PRT.

    • Conclusions:

    • The continuous-flow model provides a more precise description of temporal patterning in PRT.
    • This model enhances understanding of physiological function in speech production.