Figure 3

EEG power spectra during static (0%) and dynamic balance task (core board). Median values computed among elderly in (a) and (b) and among younger adults in (c) and (d) for each ROI represented by a sphere centered on the cortical region, whose radius is linearly related to the EEG power spectrum magnitude. Such information for panels (a–d) is also coded through a color scale titled “Relative power spectra”. In particular, we reported the power spectra values for each EEG frequency band (ordered per columns) during static balance (0%) in (a) and (c) and during dynamic balance on the core board in (b) and (d). The P-values showing statistically significant differences between the elderly and the younger adults were reported in panel (e) during the static balance test (0%) and (f) during the dynamic balance test (core board). Each P < 0.05 is represented by a sphere centered on the cortical region, whose radius is linearly related to the magnitude, also coded through a color scale titled “P-values”.