into grand central station on each side but also there's going to be a lead on the top of your brain sitting on the surface of your brain. >> dr. oaken and dr. foote have chosen amber for an experimental dbs surgery. they will implant a new grid-like device on top of her brain in addition to the standard leads which go deep inside the brain. by combining both, they hope to gather information from amber's brain that will not only lessen her ticks, but maybe some day stop them. >> so the difference in tourette is the movement disorder isn't there all the time, you know, when you get a tick, it comes on. and the patients that have ticks they get this buildup, they call it an urge, that's what the scientists call it and they feel like they need to move and until they move they don't feel better and so they get a sense of relief. >> between the two black, okay? ♪