Figure 2

Polygraphic EMG tracings showing the effects of mechanical and pharmacological stimulations upon the expression of the fictive ejaculation response in spinal rats: (A) Intravenous injection of dopamine (0.1 μM/kg); (B) Intravenous injection of haloperidol (0.26 μM/kg) (first arrow) followed by the injection of dopamine (0.1 μM/kg) (second arrow). Arrows indicate the moment of injection.