marginally significantp = 0.079
In exploratory analyses following five additional booster sessions, a trend-level effect was observed in the Reasoning and Problem Solving domain (Supplementary Table 2 and Supplementary Figure 5 ), with a marginally significant group-by-time interaction (F = 2.817, df = 2,30, p = 0.079; η2 = 0.19), suggesting a possible effect of active tACS on higher-order cognitive functioning.