 Bladder Function cystometrogram. Subjects will undergo a cystometrogram to assess bladder capacity and pressure. While the subject is supine a catheter will be inserted in the urethra and advanced into the bladder. The bladder will be filled with saline solution and the pressure will be recorded. Pressure will also be recorded when the bladder is relieved. We may use surface electrodes to measure leg muscle activity during bladder filling and emptying. The test will be performed at an urologist office and does not require sedation or anesthesia. 