Figure 2-1
Side effects of tACS. A, Visualization of questionnaire data for skin sensations (aggregated across itching, warmth, stinging, pulsating), phosphenes, fatigue, and pain. Lowest row represents “absent” response while top rows indicate “light” to “strong” sensation. The sizes of circles represent the number of responses, and asterisks indicate the median response per condition and sensation. B–D, Correlations of ranked behavioral effect detected in ANOVA with skin sensations (rank 1 is lowest value). Bar plots indicate direction of behavioral effects. Across all effects, correlations are weak and nonsignificant, but show signs that are opposite to what would have been expected if side effects drove the behavioral effects. Download Figure 2-1, EPS file.