Brain–Computer Interfaces - Index of

The First Commercial Brain–Computer Interface Environment 301
Each mask contained 13–50 commands. In such an application, precise timing
between the appearance of the symbol on the screen and the signal processing unit is
very important. Therefore, the flashing sequence was implemented under Simulink
where the real-time BCI processing was also running. A UDP interface was also
programmed that sent the data to the XVR system to control the smart home, as
shown in Fig. 13.
4.3 Avatar Control
Another interesting application inside VR is the control of avatars. In this application,
a human subject was rendered in 3D. To create more realistic motions of
the avatar, a motion capture system was used. Hence, special motion patterns such
as walking, kick-boxing, dancing, or jumping are available for the VR animations.
A control mask was then implemented that allowed 15 commands, as shown in
Figure 19. In this case, the commands were not goal-oriented like in the smart home
Fig. 19 Top: Avatar control mask. Bottom: Typical behaviors of the avatar include standing, being
bored, dancing. Realized by Chris Christus and Mel Salter from University College London