A Survey of Stimulation Methods Used in SSVEP-Based BCIs

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="702357.fig.003a" src="https://static.hindawi.com/articles/cin/volume-2010/702357/figures/702357.fig.003a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Single graphic</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="702357.fig.003b" src="https://static.hindawi.com/articles/cin/volume-2010/702357/figures/702357.fig.003b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Pattern reversal</td></tr></table></td></tr></table>

<table>(a) In single graphic stimuli the graphical object alternately appears and disappears in the background. (b) In pattern reversal stimuli at least two patterns are alternated at a specified frequency.</table>

Computational Intelligence and Neuroscience

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Figure 3

Figure 3: A Survey of Stimulation Methods Used in SSVEP-Based BCIs 