half motor, motor movements, and almost half emotion. so when you take a look at what they're trying to do, they're actually going right in the middle. you got motor on one side. emotion on the other. and look at that line that goes right down the middle of both. to make sure they found the right location, this sometime late the leads on amber's motor cortex. >> how you doing? >> that involuntary switch that's a good sign. >> is this going to change? >> next the deep brain electrodes are lowered into place to capture neural activity. >> okay, let's get the lights down. what we're listening to now is three channels so it's like an orchestra so it's an ensemble. >> oaken gradually drives the electrodes deeper and deeper listening as the cells talk to him. >> all three channels are up, guys, got a burster coming out of the posterior channel.