Saeid Ghazanfari - Department of Bio Medical Engineering Science and Research Branch, Islamic Azad University Tehran, Iran
Ali Motie Nasrabadi - Department of Biomedical Engineering Shahed University Tehran, Iran
S. Mohammad - Department of Medical Physics Tarbiat Modares University Tehran, Iran
P. Firoozabadi - Department of Medical Physics Tarbiat Modares University Tehran, Iran

this paper investigates the safe movement of pathfinder robot in a Virtual Environment (VE) comprising fixed and moving obstacles only by using electroencephalogram (EEG) signal. In the proposed system, users can choose the movement destination using P300 evoked potential and also change the velocity to react to the moving obstacles in the real time. The experimental results of system evaluation on four healthy male persons illustrate its ability to move different objects by handicap users.

virtual reality; alpha wave; P300; pathfinder robot