Hello Sue, I know your Mom and the family are a little anxious as the surgery date approaches I had mine in Charlottesville, Va. at U. Va. Medical Center. During the whole procedure, I felt no pain, not even any discomfort. My dr. joked alot as med students observed. It felt a little weird when he put what he called a probe into the right side of my brain and at some point he asked me to count backwards from 10. Yes, I'm glad i had it done-- I will pray for your Mom, and you, too- God bless Your Mom. you and the family Let me hear how she is doing after the procedure is complete- If i help in any way, just let me know-------pete