Oro-Pharyngeal Sensitivity and Elicitation of Swallowing in Man

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Abstract
In dry swallowings repeated at maximum frequency, manometric recording on healthy volunteers showed that the swallowing intervals successively increased. After surface anaesthesia of the oro-pharynx the difficulties in dry swallowing increased. A corresponding increase did not occur in sham tests. The results show that the elicitation of swallowing is dependent upon oro-pharyngeal sensitivity and further that the reflexive elicitation of swallowing cannot instantly be fully replaced by other mechanisms.

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