I'm on work experience <a href=" http://www.lauraciuhu.ro/en ">ipratropium and albuterol oo</a> Researchers said Mr. Vawter is the first person to have been able to control such a prosthetic by brain signals alone. Current state-of-the-art devices involving both the knee and the ankle require pressing a remote-control button at, say, the bottom of a flight of stairs to rock and kick the leg back to make the step up, said Levi J. Hargrove, a researcher at the Center for Bionic Medicine, Rehabilitation Institute of Chicago.