![](bg8.png)
Figure 5: Screenshot of our prototype online brain activity
system. The upper left monitor area displays the EEG
signal; the hypothesized current user state is shown in the
upper right corner. Spectrograms for the headband
electrodes fp1, fp2 f7 and f8 are shown at the bottom.
ACKNOWLEDGEMENTS
This material is in part based upon work supported
by the European Union (EU) under the integrated
project CHIL (Grant number IST-506909). Any
opinions, findings, and conclusions are those of the
authors and do not necessarily reflect the views of
the EU. The authors would like to thank Laura
Honal and Dana Burlan for their cooperation and
patience during the data collection, Christian Mayer
and Markus Warga for implementing the recording
software and tools, as well as Klaus Becker and
Gerhard Mutz for their support with respect to the
recording devices. Without the contributions of all
these people, this work would not have been
possible.
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