Advancement in the EEG-Based Chinese Spelling Systems

EEG-based spelling systems have practical utilities, not only for spelling letters but also for "spelling" commands to control machines, such as robots, directly by analyzing brain signals. In recent years, EEG-based English Speller EEGES has been widely studied. However, only a few researches focused on EEG-based Chinese Speller EEGCS, which is more difficult to be developed than EEGES. This paper introduced the current methods for EEGES, presented the advancement of methods Shape-based and Phonetic-based employed in the current EEGCS systems, discussed the existing problems, highlighted the future research direction, and showed that EEGCS would be a promising research field with rapid development in the future.

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