Timescales of rs-fMRI activity. a, Brain maps of mean timescale (lag-1 TA) maps for Child (left), Adult (center), and Old (right) age groups. b, c, Scatter plots of the timescales for Child versus Adult (b) and Adult versus Old (c) age groups. Small and large symbols show the values for individual ROI and network averages. Dotted lines show group means.