Skip to main content
Figure 1 | Journal of NeuroEngineering and Rehabilitation

Figure 1

From: Toward brain-computer interface based wheelchair control utilizing tactually-evoked event-related potentials

Figure 1

Experimental design. (A) Screenshot of the display presented during the calibration phase. The current target tactor was presented schematically in top and side view. The arrows on the top left indicate the consecutive targets of the run. (B) Top view of the floor plan. Four checkpoints were inserted into the building and participants had to target one after another until reaching a desk at checkpoint 4. (C) Screenshot of the virtual environment (view from behind the neck support of the wheelchair). The screenshot was taken shortly before reaching the final checkpoint (blue/red stack) close to the desk (left center of the screenshot). In the upper right corner, position tracking was provided for orientation in the building. (D) Collision zones of the wheelchair. When frontally approaching an object (i.e. an object enters the “stop” zone marked in orange), the wheelchair would stop to prevent collision. Furthermore, it would slow down when any objects entered the “slow” zone (green ellipse around the wheelchair).

Back to article page