Figure 4. Interaction with a recently fear-conditioned conspecific induces c-Fos expression in the central and lateral nuclei of the amygdala and in the prefrontal cortex in males but not in females.

Mean number of c-Fos-immunopositive nuclei ± SEM per mm² is presented. CeM – medial subdivision of the central amygdala, CeL – lateral subdivision of the central amygdala, LA – lateral nucleus of the amygdala, INS – insular cortex, PL – prelimbic cortex, IL – infralimbic cortex. In the right panel, activation maps are presented. Levels of significance (LSD test): *p < 0.05 (yellow), **p < 0.01 (orange), ***p < 0.001 (red), S-O vs NS-O groups.