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. 2008 Dec 22;587(Pt 4):805–817. doi: 10.1113/jphysiol.2008.165324

Figure 1. EMG recordings from mylohyoid muscle during and after DW administration into the pharyngolaryngeal region in the rats with capsaicin or vehicle injection to the whisker pad skin or lingual muscle.

Figure 1

The frequent EMG burst discharges were recorded from mylohyoid muscle during and after DW administration and each burst indicates the occurrence of a swallow. The number of EMG bursts was counted for 60 s and the number of swallows was calculated during and after the administration of DW. A, typical burst EMG discharges following capsaicin or vehicle injection to the whisker pad skin in the rat with DW administration. B, effect of different concentrations of capsaicin to whisker pad skin or lingual muscle on DW-induced swallowing reflex. Whisker: whisker pad skin, Lingual: lingual muscle, Cap: capsaicin, DW: distilled water. *P < 0.05.