Fig. 4.

Percentage of trials in which food-deprived female (top graph) and male (bottom graph) ferrets successfully used the peppermint odor as a discriminative stimulus to identify the Y maze goal box that contained the Nutri-Cal food reward. Groups of ferrets were tested both before (Pre-operative) and after (Post-operative) their nares were bilaterally occluded or sham-occluded. *p < 0.05, comparisons with sham-occluded values in the same postoperative behavioral test session; †p < 0.01, within-groups comparisons with values from preoperative test 4 by post hocStudent–Newman–Keuls tests. Data are expressed as mean ± SEM.