Fig. 3

Boxplots showing group differences based on t-tests in the asymmetry measures of trial-to-trial variability : (A) P300 non-target neural responses; (B) P300 target neural responses; Significance levels are denoted as follows: *** for p < 0.001, ** for p < 0.01, * for p ≤ 0.05, and ns for not significant; Detailed statistical values can be found in Table S2 of the supplementary material