Fig. 8.
Experiment 4A. Mean numbers of infusions in 1-h sessions of operant licking for sugar solutions. Both groups of FVB mice were trained (T) with food-baited spouts and 8% sucrose infusion and then were shifted to licking on empty spouts. The Glucose group was shifted to 8% glucose infusion, and the Fructose group to 8% fructose infusion.