disabled for life. i've had a lot of therapy. >> within a few months, all that stan was able to do was take a few steps and then he simply plateaued. when you first saw him, what was the expectation for his recovery. >> the expectation was poor. he was more than a year out from his stroke. he had already undergone physical therapy, occupational therapy and despite the early improvements, it wasn't improving. >> that why dr. andre machado offered something to stand that was -- to stan that was a first in humans, a deep brain stimulateor. you may have heard of this for parkinson's disease but this was specifically to help stan recover from the stroke. >> stan had weakness but was able to walk with his left leg.