Experts say having a stroke can wipe out a lifetime of learning.
Walking, eating, and getting dressed can be difficult or even impossible.
Marcus White had to re-learn every simple task since his stroke last year, but now with a device called a "hand mentor" Marcus is doing well.
The "hand mentor" helps patients learn to extend their wrists by listening to his brain.
One physical therapist, Andrew Butler, Ph.D., says, "A lot of people who have a stroke don't have the movement in their wrist and in their fingers, and this is something that is quite unique about this device."
A computer screen gives feedback and it becomes more difficult as patients improve.
The "hand mentor" is still under study at the Cleveland Clinic.