Fig. 4.
Changes in DOPAC (top panel) and HVA (bottom panel) concentrations in the nucleus accumbens during baseline (Bas), while a receptive female was present behind the screen (Scr), during copulation, and after copulation. Within-group Newman–Keulspost hoc tests revealed significant (p < 0.05) increases in nucleus accumbens metabolite concentrations from baseline in AMPH (DOPAC, time = 30–80 min; HVA, time = 30–90 min) and CONT (DOPAC, time = 30–90 min; HVA, time = 50–100 min) rats.