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Related Experiment Videos

A miniature electrode for surface electromyography during speech.

K J Cole, R A Konopacki, J H Abbs

    The Journal of the Acoustical Society of America
    |November 1, 1983
    PubMed
    Summary

    A novel miniature surface electromyography (EMG) electrode for perioral speech analysis offers comparable performance to traditional intramuscular electrodes. Its innovative design ensures secure skin attachment and stable, high-quality bioelectric signals.

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    Area of Science:

    • Biomedical Engineering
    • Neuroscience
    • Speech Science

    Background:

    • Surface electromyography (EMG) is crucial for analyzing muscle activity during speech.
    • Existing perioral EMG electrodes often face challenges with secure attachment and signal quality.
    • Intramuscular electrodes, while effective, can be invasive and uncomfortable for long-term use.

    Purpose of the Study:

    • To develop and evaluate a miniature, recessed surface EMG electrode for perioral speech applications.
    • To assess the bioelectric performance and usability of the novel electrode design.
    • To compare the novel surface electrode's characteristics with conventional intramuscular electrodes.

    Main Methods:

    • Construction of a miniature, recessed surface EMG electrode with a custom acrylic housing and extruded design for skin cement attachment.

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  • Utilization of a homogeneous silver/silver chloride disk for enhanced bioelectric properties and durability.
  • Testing and comparison of the surface electrode's skin-electrode impedance, noise floor, bandwidth, and signal-to-noise ratio against fine-wire intramuscular electrodes.

    • Main Results:

    • The miniature surface EMG electrode demonstrated secure skin attachment using skin cement.
    • Achieved low, stable, and well-matched skin-electrode impedance.
    • Exhibited a low noise floor, wide bandwidth, and good signal-to-noise ratios, comparable to intramuscular electrodes.
    • The electrode design proved durable for perioral applications.

    Conclusions:

    • The developed miniature recessed surface EMG electrode is a viable, less invasive alternative for perioral speech analysis.
    • Its performance metrics are comparable to traditional intramuscular electrodes, offering improved comfort and ease of use.
    • This novel electrode design holds promise for advancing speech motor control research and clinical diagnostics.