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. 2019 Mar 29;10:240. doi: 10.3389/fphys.2019.00240

FIGURE 5.

FIGURE 5

Illustration of the correlation structure within pre-test measures. On the x and y axis the first 2 source components (SC) are depicted. Highlights indicate the correlation of the maximally correlated source components within (pink and green square) and between intensities (blue square).