Human newborns differentiate differing concentrations of sucrose and glucose.
One- to three-day-old infants who sucked to obtain flavored water revealed a precisely graded tongue movement which was sensitive to the gustatory properties of the flavored water. Stronger concentrations of sucrose and glucose elicited movements of greater amplitude than did weaker concentrations; sucrose was effective at lower concentrations than was glucose. These results correspond well with the relative sweetness adults attribute to these solutions in psychophysical studies.
D002628:Chemoreceptor Cells / Q000502:physiology; D005947:Glucose; D006801:Humans; D007231:Infant, Newborn; D013391:Sucking Behavior / Q000502:physiology; D013395:Sucrose; D013649:Taste / Q000502:physiology; D014059:Tongue / Q000294:innervation
D013395:Sucrose; D005947:Glucose