Comparison of normalized PPT task performance
Table Effects of tDCS stimulation on the normalized Z-scores of the two PPT subtests. The results of 2 × 2 × 2 mixed-design analysis of variance of the normalized Z-scores with group as the between-participant factor and time and task type as the within-participant factors. The displayed points show the individual Z-scores. Error bars indicate the 95% confidence interval; the bottom and top of each box, the 25th and 75th percentiles; and the line and square inside the box, the 50th percentile (median) and the mean, respectively. ** = p < 0.001. 