MOE/MOB = main olfactory epithelium/bulb, VNO/AOB = vomeronasal organ/accessory olfactory bulb, PC = piriform cortex, ACN = anterior cortical nucleus of the amygdala, MeA = anterior medial amygdala, MeAv, d = anterior medial amygdala ventral, dorsal portion, respectively, MeP = posterior medial amygdala, MePv, d = posterior medial amygdala ventral, dorsal portion, respectively. Conspecific, reproduction-related stimuli activate MeA and MePd.