Influence of electrode site on M level

Differences between M level groups according to electrode site were analysed using one-way ANOVA. The analysis of variance showed that the M levels were significantly different depending on the position of the electrode contact on the array (p ≤ 0.05) as illustrated by Figure 4. Post hoc comparisons using Dunn’s method were significant for M levels of electrode 3 versus M levels of site 15 (p ≤ 0.05).

Figure 4. M levels averaged across subjects for each electrode site. Vertical bars show the standard error around each mean.