Figure 3.

Conventional ROC techniques (fraction of true positives (FTP) vs. fraction of false positives (FFP)) are shown for the simulation of Figure 2. Specifically, a comparison was carried out for the high noise case (CNR = 0.25, left) and the low noise case (CNR = 0.5, right) using different analysis techniques. Note that for the low CNR case, the cCCA methods with the sum constraint and the max constraint are superior than the other methods whereas for the high CNR case, cCCA with the sum constraint is best. For both CNR scenarios conventional CCA (red) performs poorly. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.]