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Related Experiment Videos

Respiratory sinus arrhythmia during speech production.

Kevin J Reilly1, Christopher A Moore

  • 1Department of Speech and Hearing Sciences, University of Washington, Seattle 98105-6246, USA. kjreilly@u.washington.edu

Journal of Speech, Language, and Hearing Research : JSLHR
|March 22, 2003
PubMed
Summary

Reading aloud increases respiratory sinus arrhythmia (RSA) amplitude, suggesting speech production modulates breathing control pathways. This study explored how speaking affects heart rate variability during respiration.

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Area of Science:

  • Physiology
  • Neuroscience
  • Speech Science

Background:

  • Respiratory sinus arrhythmia (RSA) reflects the interplay between breathing and heart rate.
  • Speech production involves complex respiratory control distinct from resting breathing.

Purpose of the Study:

  • To investigate if speech production alters RSA amplitude.
  • To determine if respiratory control changes during speech affect RSA.

Main Methods:

  • Recorded respiratory kinematics, ECG, and audio signals from 18 adults.
  • Compared RSA during reading aloud, silent reading, and rest breathing.

Main Results:

  • Reading aloud increased respiratory duration, lung volume, and inspiratory velocity.

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  • These respiratory changes during speech were associated with increased RSA amplitude.

    • Conclusions:

    • Speech production actively modulates cardiorespiratory control pathways.
    • Sensorimotor pathways involved in respiration are influenced during vocalization.