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DOI: 10.1055/s-0039-1686741
The effect of Stimulus-Duration on the EGM-Thresholds. Qualitative or quantitative methods?
Introduction:
The aim of the study was to investigate the effects of stimulus-duration changes on electrogustometric (EGM) thresholds.
Methods:
In 212 non-smokers (age range 10 – 80 years), divided in 8 age groups, EGM-thresholds at the area innervated by the chorda tympani, at the soft palate and at the area of the vallate papillae were recorded bilaterally. We evaluated the effects of stimulus duration (0.5, 1.0, 1.5 and 2.0 s) on EGM detection thresholds.
Results:
EGM thresholds recorded in response to stimuli of 1 and 1.5 s duration are not significantly different from each other but lower than those recorded after application of 0.5-stimuli. EGM-thresholds recorded in response to 2 s stimuli are the lowest of all thresholds tested.
Conclusions:
The latter findings are consistent at all 6 recording areas, and at all age groups. We have also controlled taste acquity with the use of taste strips, in a great number of the above subjects (n = 132) in order to examine any possible influence of age and sex.
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Publication History
Publication Date:
23 April 2019 (online)
© 2019. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).
Georg Thieme Verlag KG
Stuttgart · New York