To investigate the interrelations between healthy aging, MEG power and cognitive performance, we ran multiple linear regressions using R (R Core Development Team, R Foundation for Statistical Computing, Vienna). We used spectral power, age and their interaction as predictors, and performance on neuropsychological tests as the dependent variable. Individual peak alpha frequency (IAF; defined as the frequency with the largest power in the range of 8–13 Hz) was entered as a covariate.
