Average network connectivity curves in the RMT hub for low (solid line) and high (dashed line) episodic memory score groups. Permutation tests revealed no significant difference, as the means are virtually identical, while the FPCA analyses were significant. Corresponding curve comparisons for groups defined by executive function are indistinguishable, so they are not shown in this study. FPCA, functional principal component analysis; RMT, right middle temporal.