Analyses
SIDE EFFECTS
To measure protocol adherence, we conducted independent-samples t-tests between the tACS groups on the percentage of tasks completed as compared to what was expected (CCT: eight AKL-T01 sessions, Outcomes: three Monitor sessions, three ACE-X sessions, three IADL surveys). Side effects were averaged across the eight CCT sessions per participant for each of the 11 categories. We then conducted independent-samples t-tests between the two tACS groups for each of the 11 categories.To assess divided attention (multitasking), we measured the difficulty threshold level reached at each time point for both the perceptual discrimination and visuomotor tracking multitasking modules. To assess sustained attentional control, we averaged RT across both portions of the ACE-X continuous performance task (frequent and infrequent targets). To assess working memory, we averaged the maximum span correctly achieved on the forwards and backwards span tasks. A Greenhouse–Geisser correction was used when appropriate. Effect sizes in ANOVAs are reported as partial eta squared (