In [19] the user selects destinations or motion primitives
by concentrating on the possibilities displayed on the
computer screen (Fig.2) in order to command the wheelchair.
The information displayed on the screen is a reconstruction
of the real scenario for the user's command selection. The
environment 3D visualization is built from the 2D map
constructed in real-time by the autonomous navigation
technology. Thereby, the visual information of the screen is a
simplified reconstruction of the user's perception.