Figure 5.

Re-analysis of errors by week for Study 1, using sub-groupings of Mild and Severe HI versus shams. Results were similar to overall analysis, with near-effects seen for both Mild and Severe sub-groups at Week 8 by way of one-way ANOVA, corrected for multiple comparisons using a Tukey’s post-hoc test (* p = 0.05, # p = 0.1, respectively). Interestingly, we did find an additional significant effect at Week 3, but this was seen for the Mild HI versus Sham (as evidenced by a Tukey’s post hoc analysis; * p < 0.05, one-tail), supporting the view that the lack of effects seen at earlier (easier) tasks in Study 1 was not a reflection of lesser damage in HI subjects as compared to Study 2.