Research Article

A Synchronized Hybrid Brain-Computer Interface System for Simultaneous Detection and Classification of Fusion EEG Signals

Figure 6

The frequency feature and the second harmonic frequency feature for results of the different SSVEP stimulation: (a) 6.6 Hz flicker, (b) 7.5 Hz flicker, (c) 8.57 Hz flicker, and (d) 9.6 Hz flicker.
(a)
(b)
(c)
(d)