Robert Leeb, Doron Friedman, Gernot R. Müller-Putz, Reinhold Scherer, Mel Slater, Gert Pfurtscheller. Self-Paced (Asynchronous) BCI Control of a Wheelchair in Virtual Environments: A Case Study with a Tetraplegic. Comp. Int. and Neurosc., 2007, 2007. [doi]
Abstract is missing.