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Related Experiment Videos

Voluntary control of electrogastric activity.

B B Walker, C A Lawton, C A Sandman

    Psychosomatic Medicine
    |December 1, 1978
    PubMed
    Summary

    Individuals can learn to modify electrogastrogram (EGG) activity with specific conditioning techniques. This learned control of gastrointestinal electrical activity is associated with relaxation and reduced abdominal muscle tension.

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    Area of Science:

    • Gastroenterology
    • Neuroscience
    • Biofeedback

    Background:

    • The tonic component of the electrogastrogram (EGG) can distinguish duodenal ulcer patients from healthy individuals.
    • Investigating the learnability of electrogastrogram activity is of significant interest.

    Purpose of the Study:

    • To determine if individuals can learn to modify electrogastrogram (EGG) activity.
    • To explore the physiological correlates of learned gastrointestinal electrical control.

    Main Methods:

    • Subjects underwent discriminative conditioning with analogue feedback to control EGG activity.
    • Physiological measures included EGG, heart rate, respiration, abdominal muscle activity, and digital blood flow.

    Main Results:

    • Subjects were largely unsuccessful in controlling tonic EGG activity with the initial paradigm.
    • A modified conditioning paradigm enabled subjects to modify specific electrogastric changes.
    • Learned EGG control correlated with reduced abdominal muscle activity and self-reported relaxation.

    Conclusions:

    • Individuals can learn to modify electrogastrogram activity through specific conditioning paradigms.
    • Learned control of gastrointestinal electrical activity is linked to physiological relaxation.
    • Further research into GI electrical activity and learned control may yield clinical and theoretical advancements.

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