Premium
Tongue–pressure and hyoid movement timing in healthy liquid swallowing
Author(s) -
Steele Catriona,
Sasse Caroline,
Bressmann Tim
Publication year - 2011
Publication title -
international journal of language and communication disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.101
H-Index - 67
eISSN - 1460-6984
pISSN - 1368-2822
DOI - 10.1111/j.1460-6984.2011.00082.x
Subject(s) - tongue , swallowing , hyoid bone , excursion , soft palate , anatomy , medicine , orthodontics , dentistry , surgery , pathology , political science , law
It was hypothesized that tongue–palate pressure generation might directly facilitate hyoid movement in swallowing through the anatomical connections of the extrinsic tongue muscles. If true, non‐invasive measures of tongue–palate pressure timing might serve as a proxy measure of hyoid excursion. The timing relationships between events in the tongue–palate pressure and hyoid movement profiles during water and nectar‐thick liquid swallowing in healthy adults were explored. Concurrent intra‐oral manometry and submental B‐mode midsagittal ultrasound were recorded. It was determined that there is no obligate sequence in the onsets, or offsets, of tongue–palate pressures and hyoid excursion. Timing lags (either of hyoid movement lagging tongue–palate pressures or vice versa) fell within 0.5 s, on average. It is concluded that tongue–palate pressure generation and hyoid movement are separate phenomena in the swallowing sequence and that non‐invasive measures of tongue–pressure timing cannot be used reliably as proxy measures of hyoid movement timing.