Fig. 2.

Chorda tympani (CT) nerve responses of adolescent (left) and adult (right) rats to lingual stimulation with 4 concentrations of ethanol, quinine, sucrose, and NaCl. In each panel, we juxtapose relative responses of control and ethanol rats. Relative responses (mean ± SE) reflect the ratio of the integrated response to a taste stimulus divided by that to 0.1 M NH₄Cl. We used different scales on the y-axes for each stimulus because the magnitude of the relative responses varied greatly. We obtained CT nerve responses from 14 adolescent (6 control and 8 ethanol) and 16 adult (7 control and 9 ethanol) rats. We present analyses of these responses in Table 1. When there was a significant main effect of maternal diet (or interaction of maternal diet × age class) for a given stimulus, we compared relative response to each concentration across control and ethanol rats (separately for each age class), using Sidak’s multiple comparison test (*P < 0.05).