Recent Advances of P300 Speller Paradigms and Algorithms

The P300 speller is the most common application that uses brain-computer interface (BCI) for object control. At present, many researches use the P300 for the application of text input. However, there is no unified standard in the design of P300 signal induced interface, signal acquisition process, and signal processing method. Therefore, we searched the articles about P300 speller design in recent years and summarized the key technical improvements. This review focuses on the design of signal induced interface, as well as the algorithms commonly used in signal processing. We particularly emphasized the design ideas of the induced interface, as well as the advantages and limitations of the algorithm. Only by improving or combining the existing induced interface morphology and processing algorithms, then creating new methods, can enhance the practical application capability of P300 speller.