Comparison of the BCI Performance between the Semitransparent Face Pattern and the Traditional Face Pattern

Figure 4

Six panels presenting the mean amplitudes averaged from each ERP peak point ±20 ms for each subject, and the differences in the amplitudes of N400 between the first and third offline runs from the two paradigms. These panels indicate the averaged amplitude of VPP at Cz (a); the averaged amplitude of N200 at P8 (b); the averaged amplitude of P300 at Pz (c); the averaged amplitude of N400 at Cz (d); the difference of N400 at Cz from the first and third offline run of the F-P (e); the difference of N400 at Cz from the first and third offline run of the STF-P (f). In addition, “Avg” is the average, “STD” is the standard deviation, and the error bars in the figure represent a standard deviation of each data set.

(a)

(b)

(c)

(d)

(e)

(f)