Figure 4.

Observer mice spend more time investigating orofacial secretions from blue light-stimulated mice

(A and B) Orofacial secretions from female blue light-stimulated mice attracted both male and female conspecifics. (A) Schematic showing the behavioral strategy. (B) Social preference index of observer mice under no light and light condition.

(C and D) Orofacial secretions from male blue light-stimulated mice attracted both female and male conspecifics. (C) Schematic showing the behavioral strategy. (D) Social preference index of observer mice under no light and light condition. n = 14 observer mice (7 males and seven females). In B and D, orofacial secretions collected under the light condition were from the same mice under the no light condition. Data are shown as the mean ± SEM. Wilcoxon matched-pairs signed rank test in (B) and two-tailed paired Student’s t test in (D): ∗∗p < 0.01 and ∗∗∗p < 0.001. Raw data for calculating the preference index are included in Table S1 and results of statistical analyses in Table S2.