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1 Bulletin of the Polish Academy of Sciences. Technical Sciences

1 2012

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User-centered design of brain-computer interfaces: OpenBCI.pl and BCI Appliance

Durka P., Kuś R., Żygierewicz J., Michalska M., Milanowski P., Łabęcki M., Sputek T., Laszuk D., Duszyk A., Kruszyński M.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2012

Vol. 60, nr 3

427-431

Brain-Computer Interface (BCI) allows for non-muscular communication with external world, which may be the only way of communication for patients in a locked-in state. This paper presents a complete software framework for BCI, a novel hardware solution for stimuli rendering in BCIs based on Steady State Visual Evoked Potentials (SSVEP), and a univariate algorithm for detection of SSVEP in the EEG time series. OpenBCI is a complete software framework for brain-computer interfaces. Owing to an open license and modular architecture, it allows for flexible implementations of different communication channels in the serial or parallel hybrid mode, minimization of costs and improvements of stability and efficiency. Complete software is freely available from http://openbci.pl. BCI Appliance is a hardware solution that allows for dynamic control of menus with stable generation of stimuli for the SSVEP paradigm. The novelty consists of a design, whereby the LCD screen is illuminated from behind using an array of LEDs. Design pioneers also proposed a new line of thought about the user-centered design of BCI systems: a simple box with one on/off button, minimum embedded software, wireless connections to domotic and EEG acquisition devices, and user-controlled mode switching in a hybrid BCI.