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HCI
2007

A Note on Brain Actuated Spelling with the Berlin Brain-Computer Interface

13 years 5 months ago
A Note on Brain Actuated Spelling with the Berlin Brain-Computer Interface
Brain-Computer Interfaces (BCIs) are systems capable of decoding neural activity in real time, thereby allowing a computer application to be directly controlled by the brain. Since the characteristics of such direct brain-tocomputer interaction are limited in several aspects, one major challenge in BCI research is intelligent front-end design. Here we present the mental text entry application ‘Hex-o-Spell’ which incorporates principles of Human-Computer Interaction research into BCI feedback design. The system utilises the high visual display bandwidth to help compensate for the extremely limited control bandwidth which operates with only two mental states, where the timing of the state changes encodes most of the information. The display is visually appealing, and control is robust. The effectiveness and robustness of the interface was demonstrated at the CeBIT 2006 (world’s largest IT fair) where two subjects operated the mental text entry system at a speed of up to 7.6 char/mi...
Benjamin Blankertz, Matthias Krauledat, Guido Dorn
Added 29 Oct 2010
Updated 29 Oct 2010
Type Conference
Year 2007
Where HCI
Authors Benjamin Blankertz, Matthias Krauledat, Guido Dornhege, John Williamson, Roderick Murray-Smith, Klaus-Robert Müller
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