![]() Miller JL, Watkin KL: The influence of bolus volume and viscosity on anterior lingual force during the oral stage of swallowing. Am J Gastroenterol 88:665–669, 1993Īli GN, Laundl TM, Wallace KL, deCarle DJ, Cook IJ: Influence of cold stimulation on the normal pharyngeal swallow response. Ren J, Shaker R, Zamir Z, Dodds WJ, Hogan WJ, Hoffmann RG: Effect of age and bolus variables on the coordination of the glottis and upper esophageal sphincter during swallowing. Am J Physiol 262(2 Pt 1):G338–G344, 1992īisch EM, Logemann JA, Rademaker AW, Kahrilas PJ, Lazarus CL: Pharyngeal effects of bolus volume, viscosity, and temperature in patients with dysphagia resulting from neurologic impairment and in normal subjects. ![]() Logemann JA, Kahrilas PJ, Cheng J, Pauloski BR, Gibbons PJ, Rademaker AW, Lin S: Closure mechanisms of laryngeal vestibule during swallow. Halper A: Effects of bolus volume, viscosity, and repeated swallows in nonstroke subjects and stroke patients. Lazarus CL, Logemann JA, Rademaker AW, Kahrilas PJ, Pajak T, Lazar R. Kahrilas PJ, Logemann JA: Volume accommodation during swallowing. Dysphagia 18:231–241, 2003Ĭhi-Fishman G, Sonies BC: Effects of systematic bolus viscosity and volume changes on hyoid movement kinematics. Pelletier CA, Lawless HT: Effect of citrus acid and citric acid-sucrose mixtures on swallowing in neurogenic oropharyngeal dysphagia. Kagel MC, Leopold NA: Dysphagia in Huntington’s Disease: a 16-year retrospective. Logemann JA, Pauloski BR, Colangelo L, Lazarus C, Fujiu M, Kahrilas PJ: Effects of a sour bolus on oropharyngeal swallowing measures in patients with neurogenic dysphagia. Robbins JA, Hamilton JW, Lof GL, Kempster GB: Oropharyngeal swallowing in normal adults of different ages. Logemann JA: Effects of aging on the swallowing mechanism. Logemann JA, Pauloski BR, Rademaker AW, Colangelo LA, Kahrilas PJ, Smith CH: Oropharyngeal swallow in younger and older men: temporal and biomechanical characteristics of oropharyngeal swallow in younger and older men. San Diego, CA: Singular, 1999Ĭrary MA, Groher ME: Introduction to Adult Swallowing Disorders. Miller AJ: The Neuroscientific Principles of Swallowing and Dysphagia. Logemann JA: Evaluation and Treatment of Swallowing Disorders, 2nd ed. The results provide a basis for work with individuals with dysphagia. ![]() This study contributes to the literature on oral and oropharyngeal perceptions and on aging. Men exhibited a more marked deterioration in sensitivity than women. Viscosity perception deteriorates with increasing age. Results indicate that the exponent for oral perception of fluid viscosity was 0.3298, while for oropharyngeal perception it was 0.3148. Sixty normal volunteers, aged 21–84 years, participated. Sensitivity was established by deriving the exponent for the psychophysical law for fluid viscosity in both the oral cavity and the oropharynx, using modulus-free magnitude estimation with Newtonian fluids of corn syrup and water. This study aims to establish the ability of normal adults to perceive fluid viscosity in the oral cavity and oropharynx and to determine if, within this population, there are age-related changes in oral and oropharyngeal perceptions. However, it is not known what variations in viscosity can be perceived in the oral cavity or oropharynx or if age affects oral and oropharyngeal perceptions of fluid viscosity. Altering the consistency of fluids is a common compensatory technique used in dysphagia management to facilitate change. Research demonstrates that varying sensory input, including the characteristics of a bolus, changes swallow physiology.
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