SC–cognition. A, LV1 correlations between SC and cognition, with CIs from bootstrap resampling. B, LV1 bootstrap ratios. These are connection loadings on the SC–cognition relationship: bootstrap threshold = −2.5 to 2.5. Connections with positive bootstrap ratios contribute positively to the SC–cognition correlation, and negative bootstrap ratios contribute negatively to the SC–cognition correlation. Right and left hemisphere regions, and subcortical and cortical regions, are separated by a space in the circular plot. C, LV2 correlations between SC and cognition. D, LV2 bootstrap ratios.