Fig. 3: Effect of aging on FC after power-matching
(a) Change in PSDs across the middle-aged and elderly age groups after power matching applied over the left group of electrodes. Power matching was done separately in the particular frequency range (across the rows, from top: alpha, slow gamma, and fast gamma), as indicated by the dashed lines. The width of the PSD trace represents SEM across the subjects within the associated frequency bin. Note that different number of subjects were obtained for each frequency range (N=88, 84 and 84 for alpha, slow gamma and fast gamma, respectively). The colored bars at the bottom represent significance of differences (K-W test, black: p=0.01–0.05, green: p<0.01; not corrected for multiple comparisons). (b-c) Similar to Fig. 2b-c but computed only for the selected subjects for the left electrode group (note that in this case left and right groups cannot be averaged since there are different subjects in each group). d) Same as 2d, but for sub-selected population for each electrode group. Note that the number of samples in both age groups match as a consequence of power matching.