Chapter 7 - P300-based brain-computer interfaces

Abstract

Diverse neuro-psychological tasks have been designed for expressing intention mostly in the form of evoked potentials uncovered by time-coherent averaging, spectral analysis, or other digital signal processing techniques. Among others, the elicitation of the so-called P300 event-related potential has been found reproducible, reliable and suitable for environment control and communication applications that are not time-critical. The nature, elicitation and exploitation of the P300 potential for BCI is the subject of this chapter, organized in three sections: P300 event-related potential, P300 for spelling task and P300 for non-spelling tasks.