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Pre-stim (dark band) and post-stim (light band) voltage excursion amplitudes over time (for the last 14 weeks of the study) for the control and 20 nC/phase conditions. Shaded region indicates standard error of the mean, reflecting the variability across electrodes subjected to each regime of stimulation at each point in time. Overall differences between pre- and post-stim were significant (table 3(g)).
