Assisted closed-loop optimization of SSVEP-BCI efficiency.

In this subsample, convergence measure second half shows large and highly significant correlations with (a) of r = 0.839, p = 0.001, with (b) of r = 0.843, p = 0.001 and with (c) of r = 0.763, p = 0.004.

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thetaHigh both at Oz show an almost significant correlation over the subjects with r = −0.482 and p = 0.059, probably due to the small sample size, which is stable against the third variables age and all SSVEP- SNRs in the previous scanning phase of the experiment (a), (b), and (c), mentioned above.

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Although not fully significant, probably due to the small sample size, interindividual differences in SSVEP- SNR magnitudes under the employed higher flicker frequencies seem to show a tendency of positive association to higher IAFs while this relationship might not exist for the stimulation with the lower frequencies (or if so, it may presumably be lower).

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