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Changes from single- to dual-task condition calculated as change in dual task (Δ) = (number in the single task − number in dual tasks)/number in a single task. Stimulation tDCS montages: unilateral (Ul), bilateral (Bl), sham stimulation of dorsolateral prefrontal cortex (DLPFC) with anode left (AL) and anode right (AR). *p < 0.05.
