Fig. 2.

Effect of kisspeptin with or without kisspeptin antagonist injection into the posterodorsal medial amygdala (MePD) on the incidence of ex-copula erections. Bilateral administration of 0.1 nmol kisspeptin-10 (kp-10, n = 5) into the MePD had no effect on the incidence of ex-copula erections. However, 1 nmol kp-10 (n = 12) significantly increased the number of erections experienced, an effect blocked by kisspeptin receptor antagonism (P-234, 5 nmol; n = 6). Intra-MePD administration of artificial cerebrospinal fluid (aCSF) was withour effect (n = 12). *p < 0.05, compared with other treatment groups. ^#p < 0.05, compared with 1 nmol kp-10 alone. Data presesented as mean and SEM.