An apparatus, system and method for implementing a P300 component-based BCI are provided. The apparatus may include a display unit to display to a user the P300 component-based BCI, which includes a plurality of items to be selected, an item division unit to divide the plurality of items into N subsets according to usage frequencies of respective items, wherein N is an integer larger than 1, wherein a higher usage frequency the item has, a smaller subset the item belongs to, and a flashing unit to cause N items in the BCI to illuminate each time in a desired (and/or predetermined) frequency so as to make the user aware of, or feel, flashing of the respective items, wherein one item may be randomly selected from each of the subsets to constitute the N items.
APPARATUS AND METHOD FOR IMPLEMENTING P300 COMPONENT-BASED BRAIN-COMPUTER INTERFACE