Fig. 2.

Association between age and aperiodic activity. (A) Scatterplot of the aperiodic exponent (upper panel) and offset (lower panel) in relation to age for the eyes open and eyes closed EEG recordings. R-squared (R²) and significance values from the regression analyses are shown (asterisk indicates significance after Bonferroni correction). (B) Correlations between aperiodic activity and age for each of the anterior, central, and posterior electrode clusters. Correlations reached significance across all three locations. (C) EEG electrode cap highlighting the electrodes forming each of the electrode clusters used for the correlations (anterior = yellow, central = blue, posterior = magenta).