Abstract
A brain-computer interface (BCI) is a device that uses brain signals to provide a non-muscular communication channel [1], particularly for individuals with severe neuromuscular disabilities. One of the most promising signals for controlling a BCI are event-related potentials (ERPs) such as the P300. The P300 event related potential is an evoked response to an external stimulus that has been traditionally observed in scalp-recorded electroencephalography (EEG). The scalp-recorded P300 response has proven to be a reliable signal for controlling a BCI using the P300 Speller paradigm [2]. Recent studies have demonstrated that the P300 Speller has the potential to serve as an effective communication device for persons who have lost or are losing the ability to write and speak.
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