Measures of human sensitivities to various sweet compounds conducted at threshold (91 subjects, 7 sweeteners) and at suprathreshold levels (9 subjects, 12 sweeteners) show interindividual differences. Multidimensional analysis indicates that sweet taste can be represented in a tridimensional continuum if 12 compounds are considered. Results are speculatively interpreted as indirect evidence for the existence of several receptor sites cooperating in sweet taste chemoreception.
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Faurion et al. (1980) studied this question.