Fig. 2

Effect size distributions for all post-hoc pairwise comparisons. Violin plots show the distribution of absolute Cohen’s d values, with box plots indicating median and interquartile ranges. Horizontal dashed lines mark conventional effect size boundaries. Numbers below each comparison indicate total features analyzed, while numbers above show median effect sizes. The predominance of small effects (|d|< 0.5) across all comparisons supports the absence of robust neurophysiological differences between laterality groups.