Dan - What type of deep brain stimulation are you scheduled for? An STN? Different placement of the electrodes determines which PD symptoms the surgery targets. As you'll read in a previous letter, Dick had pallidal stimulations. He had great improvement in his tremor and dystonia - his two biggest problems - but we don't believe there was any help with his balance. It wasn't a problem at the time, but as the disease progresses, is becoming increasingly so. I think the STN may very well target balance, though. Your doctor or others who've had the STN surgery can answer that. Margie Swindler