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Figure 3 | Journal of NeuroEngineering and Rehabilitation

Figure 3

From: The cost of space independence in P300-BCI spellers

Figure 3

ERPs evoked by targets (left) and non-targets (right) in Matrix mode. Targets generate an early Visual Evoked Potential (VEP) with a negative going peak at 170 ms, followed later by a relatively early and small P300 b peaking at 352 ms. These ERPs were generated by ‘pair-averaging’ epochs, one for the row flash, and one for the column flash.

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