Rohani, Darius A.3; Henning, William S.3; Thomsen, Carsten E.1; Kjaer, Troels W.4; Puthusserypady, S.5; Sorensen, Helge B.D.5
1 Department of Electrical Engineering, Technical University of Denmark2 Biomedical Engineering, Department of Electrical Engineering, Technical University of Denmark3 Technical University of Denmark4 Copenhagen University Hospital5 Copenhagen Center for Health Technology, Center, Technical University of Denmark
Over the past two decades, much progress has been made in the rapidly evolving field of Brain Computer Interface (BCI). This paper presents a novel concept: a BCI-simulator, which has been developed for the Hex-O-Spell interface, using the sensory motor rhythms (SMR) paradigm. With the simulator, it is possible to evaluate how the model parameters such as error classifications, delay between classifications and success rate affect the communication rate. Another advantage of the simulator is that it allows us to study for more classes than most online BCI systems which are limited to only two classes. Results show that the BCI simulator is able to give a deeper understanding of the feedback systems. We also find that a 3-class system is more efficient than a 2-class system if it obtains a success rate of at least 55% of the 2-class system.
Computer Methods and Programs in Biomedicine, 2013, Vol 111, Issue 2, p. 300-307
Brain Computer Interface; Communication rate; Hex-O-Spell interface; Parameter optimization; Sensory motor rhythms; Simulation