Figure 4. Anhedonic profile during fluoxetine treatment in a stressful condition after exposure to enrichment.

When social stress was imposed during treatment, fluoxetine-treated mice showed a faster and more marked reduction of preference for the saccharin solution compared to control mice. # indicates p = 0.0199, * and ** indicate, respectively, p<0.05 and 0.01 vs. vehicle group. Data are means ± S.E.M.