System-level effects of age on network connectivity. a, Age effects on edge connectivity. Note that only edges with significant age effects at are shown. b, Age effects on within-system connectivity. No relationships survive FDR correction across systems. c, Age effects on between-system connectivity. All effects shown survive FDR correction across systems. n.s.: not significant. punc: uncorrected p value. Plots show 95% confidence intervals and partial residuals, controlling for in-scanner motion, sex, total number of volumes, and average network weight.