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Cognitive-linguistic demands and speech breathing

H L Mitchell¹, J D Hoit, P J Watson

¹National Center for Neurogenic Communication Disorders, University of Arizona, Tucson, USA.

Journal of Speech and Hearing Research

|February 1, 1996

Summary

Cognitive-linguistic demands minimally impact speech breathing mechanics. However, higher demands increase pauses and alter fluency-related breathing behaviors like speaking rate and syllables per breath group.

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Area of Science:

Speech Science
Linguistics
Respiratory Physiology

Background:

Understanding the interplay between cognitive processes and physiological speech production is crucial.
Speech breathing is fundamental to vocalization, but its modulation by cognitive load is not fully understood.

Purpose of the Study:

To investigate how varying cognitive-linguistic processing demands affect speech breathing patterns.
To determine if cognitive load influences the mechanical aspects of respiration during speech.

Main Methods:

Twenty women performed two speaking tasks with differing cognitive-linguistic demands.
Speech breathing was monitored using respiratory magnetometers measuring rib cage and abdominal movements.
Lung volume, rib cage volume, and abdomen volume changes were recorded.

Main Results:

Speech breathing mechanics (lung, rib cage, abdomen volumes) remained largely consistent across demand conditions.
Higher cognitive-linguistic demands led to fewer syllables per breath group and slower speaking rates.
Increased silent pauses, especially during exhalation, were observed under higher cognitive load.

Conclusions:

The mechanical behavior of the breathing apparatus during speech is generally robust to cognitive-linguistic demands.
Fluency-related aspects of speech breathing, such as pausing and rate, are sensitive to cognitive-linguistic processing requirements.

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