Figure 4. Effect of orchiectomy on erectile function. Systemic arterial and intracavernosal blood pressure (ICP) was continuously recorded in anesthetized male rabbits that were intact (Control, n = 4) or orchiectomized (Ox, n = 4). The maximum rise in ICP was determined at the indicated frequencies of pelvic nerve stimulation and normalized to systemic arterial blood pressure (SAP). Data are mean ± SEM (^*P < .05 compared with control).