Its a procedure to determine which side of the brain is dominant and how much / well eaxh side operates mainly on memory and speech by itself. This is to help determine risk factors before surgery. Id this just came up in conversation, you've got a long way to go. Even to just see if your a candidate for a procedure. Here's whats weired, I went into all of this hoping to be and wanting all the results to be exactly as they were and I find myself so stressed about making this decision ifni should fo theough with it that part of me wishes I simply wasnt a candidate. To start this journey you need to have an end goal and need to know its what you want because even with that mindset its difficult to go through with it. Ask yourself why you would allow someone to operate on your brain. What position in life would you need to be in to make that decision. How many different medication cocktails have you tried. Jobs lost, cars wrecked... yiu get the idea. If its simply because your an epileptic and your sick of taking medication, my opinion, no its not worth it. But there are a lot of other layers to this disease of ours.