FIGURE 12-29 Human Reactions to Taste Sucrose and other palatable tastes elicit positive (hedonic) reactions, including licking the fingers and the lips. Quinine and other unpleasant tastes elicit negative (aversive) reactions, including spitting, expressing distaste, and wiping the mouth with the back of the hand.

Information from K. C. Berridge (1996). Food reward: Brain substrates of wanting and liking. Neuroscience and Biobehavioral Reviews, 20, p. 6.