Fig. 5

The mean activity per participant in the second study for A0 (top), and Gamma (bottom), in healthy participants, MCI-R, and MD groups, as a function of cognitive load level: resting state (blue), cognitive load level 1 (red), cognitive load level 2 (green), and cognitive load level 3 (purple). Asterisks denote significant effects (*p < 0.05, **p < 0.01 and ***p < 0.001).