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. 1990 Sep;99(9 Pt 1):749-52.
doi: 10.1177/000348949009900916.

Interpreting the sounds of swallowing: fluid flow through the cricopharyngeus

S L Hamlet  1 , R J Nelson, R L Patterson
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Interpreting the sounds of swallowing: fluid flow through the cricopharyngeus

S L Hamlet et al. Ann Otol Rhinol Laryngol. 1990 Sep.

Abstract

The sounds of swallowing in normal subjects were recorded by means of a miniature accelerometer on the throat, simultaneously with videofluoroscopy of a modified barium swallow. Consistent correspondence was found between a rapid change in the acoustic spectrum of the accelerometer signal (the appearance of a region of energy prominence above 1,000 Hz) and bolus flow through the cricopharyngeus.

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