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    Dysphagia. 1996 Summer;11(3):173-9.

    Surface EMG measurements at the throat during dry and wet swallowing.

    Gupta V, Reddy NP, Canilang EP.

    Department of Biomedical Engineering, University of Akron, Ohio 44325-0302, USA.

    Erratum in:

    • Dysphagia 1996 Fall;11(4):277.

    Within the sphere of dysphagia management, there is a growing need for the development of noninvasive methods of quantification of swallowing disorders. The purpose of the present investigation was to determine if surface electromyogram (EMG) at the throat could be measured during swallowing. Surface EMG was measured from 35 normal human subjects during dry and wet swallowing. The EMG signals recorded were highpass filtered using digital fourth order highpass Butterworth filter to eliminate baseline variations. Spectral analysis was performed on the filtered signals. The mean power values of the surface EMG signals were then calculated. Paired t-test between the mean power values of surface EMG during dry and wet swallowing showed a statistically significant difference (p < 0.005). The results of the study confirmed the hypothesis that surface EMG at the throat during swallowing could be measured. Mean power of surface EMG measurement provides a reliable noninvasive measure of swallowing.

    PMID: 8755460 [PubMed - indexed for MEDLINE]

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