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Brain–Computer Interfaces - Index of

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298 C. Guger and G. Edlinger<br />

Fig. 14 Intendix running on the laptop and user wearing the active electrodes<br />

Fig. 15 User interface with 50 characters and computer keyboard like layout<br />

loud speakers, (vi) print the text or (v) send the text via UDP to another computer.<br />

For all these services a specific icon exists as shown in Fig. 15.<br />

The number <strong>of</strong> flashes for each classification can be selected by the user or the<br />

user can also use a statistical approach that detects automatically if the user is working<br />

with the BCI system. The latter one has the advantage that no characters are<br />

selected if the user is not looking at the matrix or does not want to use the speller.<br />

4.2 Virtual Reality Smart Home Control with the BCI<br />

Recently, BCI systems were also combined with Virtual Reality (VR) systems.<br />

VR systems use either head mounted displays (HMDs) or highly immersive

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