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. Author manuscript; available in PMC: 2026 Oct 22.
Published in final edited form as: Clin Neurophysiol. 2025 Mar 27;174:31–36. doi: 10.1016/j.clinph.2025.03.032

Fig. 2.

Fig. 2

Grand-averaged sway velocity (top panel) and EEG time–frequency (ERSP) plots for Controls (second panel) and Patients (third panel) at electrode Cz, time-locked to the peak of micro-fall event (timepoint-0). Statistically significant increases in power relative to baseline are displayed in red and significant decreases in power relative to baseline are in blue (p < 0.05, permutation-based statistics). The bottom panel presents the statistically significant between-group differences (cluster-corrected to p < 0.05). As can be seen, Controls exhibited an increase in high frequency (high beta and low gamma) EEG activity between 250–150 ms prior to peak instability, whist Patients show a marked suppression in these same EEG frequency bands. Please see Supplementary Materials for these analyses repeated when removing the seven ‘unstable’ Patients (whereby identical statistically significant results were observed).