Self-triggered functional electrical stimulation during swallowing.

Self-triggered functional electrical stimulation during swallowing. Research Abstract Details 

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Self-triggered functional electrical stimulation during swallowing. Abstract Text:

Hyolaryngeal elevation is essential for airway protection during swallowing and is mainly a reflexive response to oropharyngeal sensory stimulation. Targeted intramuscular electrical stimulation can elevate the resting larynx and, if applied during swallowing, may improve airway protection in dysphagic patients with inadequate hyolaryngeal motion. To be beneficial, patients must synchronize functional electrical stimulation (FES) with their reflexive swallowing and not adapt to FES by reducing the amplitude or duration of their own muscle activity. We evaluated the ability of nine healthy adults to manually synchronize FES with hyolaryngeal muscle activity during discrete swallows, and tested for motor adaptation. Hooked-wire electrodes were placed into the mylo- and thyrohyoid muscles to record electromyographic activity from one side of the neck and deliver monopolar FES for hyolaryngeal elevation to the other side. After performing baseline swallows, volunteers were instructed to trigger FES with a thumb switch in synchrony with their swallows for a series of trials. An experimenter surreptitiously disabled the thumb switch during the final attempt, creating a foil. From the outset, volunteers synchronized FES with the onset of swallow-related thyrohyoid activity (approximately 225 ms after mylohyoid activity onset), preserving the normal sequence of muscle activation. A comparison between average baseline and foil swallows failed to show significant adaptive changes in the amplitude, duration, or relative timing of activity for either muscle, indicating that the central pattern generator for hyolaryngeal elevation is immutable with short term stimulation that augments laryngeal elevation during the reflexive, pharyngeal phase of swallowing.

Self-triggered functional electrical stimulation during swallowing. Publishing Authors By Initials

For similar behavior and behavior mechanisms: behavior: self stimulation research abstracts see: behavior and behavior mechanisms: behavior: self stimulation research

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Self-triggered functional electrical stimulation during swallowing. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Journal of neurophysiology

VOLUME: 94

Page Numbers: 4011-8

Journal Abbreviation: J. Neurophysiol.

ISSN: 0022-3077

DAY: 17

MONTH: 08

YEAR: 2005

Self-triggered functional electrical stimulation during swallowing. Information

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LANGUAGE: eng

NlmUniqueID: 375404

Self-triggered functional electrical stimulation during swallowing. Keywords Mesh Terms:

KEYWORDS: Self Stimulation

MESH TERMS: physiology

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Grant and Affiliation Information for Self-triggered functional electrical stimulation during swallowing.

AFFILIATION: Laryngeal and Speech Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, 20892-1416, USA.

Country: United States

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MEDLINETA: J Neurophysiol

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