The Berlin Brain-Computer Interface presents the novel mental typewriter Hex-o-Spell
Benjamin Blankertz, Guido Dornhege, M. Krauledat, Michael Schroeder, John Williamson, Roderick Murray-Smith and Klaus-Robert Müller
In: 3rd International BCI Workshop and Training Course, Graz, 2006, Graz, Austria(2006).
We present a novel typewriter application
‘Hex-o-Spell’ that is specifically tailored to
the characteristics of direct brain-to-computer interaction.
The high bandwidth at which a user may
perceive information from the display is used in an
appealing visualization based on hexagons. On the
other hand the control of the application is possible
at low bandwidth using only two control commands
(mental states) and is relatively stable against delays
and the like. The effectiveness and robustness
of the interface was demonstrated at the CeBIT 2006
(world’s largest IT fair) where two subjects operated
the mental typewriter at a speed of up to 7.6
char/min. It was developed within the Berlin Brain-
Computer Interface project in cooperation with specialists
for Human Computer Interaction.