Novel sequential protocols for a ERP based BCI mouse

Over the last few years there has been considerable activity around P300-based BCI protocols. Much of this has been focused on trying to overcome observed irregularities in ERP classification due to temporal proximity of target events. In this paper we explore three novel protocols which utilise a consistent temporal interval between targets. This was done in order to mitigate the aforementioned issue and in turn improve classification. The three protocols produced very encouraging results with the best protocol - Random Colour protocol - achieving a mean information transfer rate of 31 bits/min with an accuracy of over 92%. The Random Colour protocol produced a P3 component with a focus around the central parietal area indicating that it is most likely a P3b. Furthermore when compared to results obtained in a previous experiment that used the standard `oddball´ paradigm the performance was favourable.