Before revision: Recently,  steady-state visual evoked potential (SSVEP) -based brain-computer interface (BCI) has attracted much attention due to its high information transfer rate (ITR) and increasing number of targets.
After revision: Recently, steady-state visual evoked potential (SSVEP) -based brain-computer interface (BCI) has attracted much attention due to their high information transfer rate (ITR) and increasing number of targets.