… side with a weighted ball. By closing her eyes, LaSpina couldn’t use her vision to help with balance, and the weighted ball shifted LaSpina’s center of mass, which … and physical therapy. Researchers have long known that physical therapy can help the walking gait by assisting the brain to make new connections, but this … PT. Dalfampridine works on potassium channels in the central nervous system to help to speed up the signals between the brain and the muscles. But it doesn’t work …