A Robust and Self-Paced BCI System Based on a Four Class SSVEP Paradigm: Algorithms and Protocols for a High-Transfer-Rate Direct Brain Communication

<table>An example of a joint time-frequency analysis (JTFA) calculated on a
screening dataset varying the stimulation frequency in the 6–17 Hz range.</table>

Computational Intelligence and Neuroscience

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Figure 3

Figure 3: A Robust and Self-Paced BCI System Based on a Four Class SSVEP Paradigm: Algorithms and Protocols for a High-Transfer-Rate Direct Brain Communication 

Figure 3 | A Robust and Self-Paced BCI System Based on a Four Class SSVEP Paradigm: Algorithms and Protocols for a High-Transfer-Rate Direct Brain Communication 