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Evidence That An Internal Schema Adapts Swallowing To Upper Airway Requirements
S. M. Wong, R. Domangue, S. Fels, C. Ludlow
Published 2017 · Medicine, Chemistry
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To swallow food and liquid safely, airway protection is essential. Upward and forward movements of the hyoid and larynx in the neck during swallowing vary in magnitude between individuals. In healthy human adults, hyoid and laryngeal movements during swallowing were scaled by differences in initial upper airway area before swallowing. Individuals increased laryngeal elevation during swallowing in response to increased airway opening before swallowing. We show that when upper airway protection requirements change, individuals use an internal sensorimotor scaling system to adapt movements to maintain swallow safety.
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