tDCS blinding questionnaire
itching, tingling, scalp irritation
Before and after receiving tDCS (either a-tDCS or s-tDCS), participants were given a questionnaire, where they were asked to rate perceived sensations (e.g., itching, tingling, scalp irritation) on a scale from 1–10 (Likert scale: 1 = absent, 10 = severe) [