approached significancep = 0.1
A 2 × 2 repeated-measures ANOVA confirmed a significant overall improvement ( p < 0.05), although the session × tDCS interaction only approached significance ( p = 0.1).
A 2 × 2 repeated-measures ANOVA confirmed a significant overall improvement ( p < 0.05), although the session × tDCS interaction only approached significance ( p = 0.1).
Moreover, the task was a key-press laboratory surrogate that omitted movement execution, spatial pressure, and fatigue; accuracy was already near the ceiling; and the critical session-by-stimulation interaction barely missed statistical significance, rendering the finding fragile at best.
Although the session × tDCS interaction did not reach statistical significance, within-group comparisons indicated that anodal stimulation produced a small but meaningful reduction in reaction time differences between congruent and incongruent (fake) trials.