Interpreting the sounds of swallowing: fluid flow through the cricopharyngeus.
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.
Department of Otolaryngology, Wayne State University, Detroit, MI 48201.
S L
SL
Hamlet
R J
RJ
Nelson
R L
RL
Patterson
D000328:Adult; D003679:Deglutition / Q000502:physiology*; D005471:Fluoroscopy; D006801:Humans; D008875:Middle Aged; D009132:Muscles / Q000502:physiology*; D010609:Pharyngeal Muscles / Q000502:physiology*; D013018:Sound Spectrography