ERIC Number: EJ1029461
Record Type: Journal
Publication Date: 2014-Feb
Abstractor: As Provided
Reference Count: N/A
Influence of the Perceived Taste Intensity of Chemesthetic Stimuli on Swallowing Parameters Given Age and Genetic Taste Differences in Healthy Adult Women
Pelletier, Cathy A.; Steele, Catriona M.
Journal of Speech, Language, and Hearing Research, v57 n1 p46-56 Feb 2014
Purpose: This study examined whether the perceived taste intensity of liquids with chemesthetic properties influenced lingua-palatal pressures and submental surface electromyography (sEMG) in swallowing, compared with water. Method: Swallowing was studied in 80 healthy women, stratified by age group and genetic taste status. General Labeled Magnitude Scale ratings of taste intensity were collected for deionized water; carbonated water; 2.7% w/v citric acid; and diluted ethanol. These stimuli were swallowed, with measurement of tongue-palate pressures and submental sEMG. Path analysis differentiated stimulus, genetic taste status, age, and perceived taste intensity effects on swallowing. Signal amplitude during effortful saliva swallowing served as a covariate representing participant strength. Results: Significant differences (p < 0.05) in taste intensity were seen across liquids: citric acid > ethanol > carbonated water > water. Supertasters perceived greater taste intensity than did nontasters. Lingua-palatal pressure and sEMG amplitudes were correlated with the strength covariate. Anterior palate pressures and sEMG amplitudes were significantly higher for the citric acid stimulus. Perceived taste intensity was a significant mediator of stimulus differences. Conclusion: These data provide confirmatory evidence that high-intensity sour stimuli do influence swallowing behaviors. In addition, taste genetics influence the perception of taste intensity for stimuli with chemesthetic properties, which modulates behavioral responses.
Descriptors: Adults, Females, Perception, Biochemistry, Genetics, Age Differences, Motor Reactions, Path Analysis, Stimuli, Correlation
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A