Table 3 RCTs for healthy volunteers

Meinzer, 2014 (Meinzer et al. 2014)

tDCS during learning sessions sham tDCS during learning sessions

5 consecutive days, 1 mA, 20 min, 35 cm² Anode: Cp5 Cathode: right supraorbital region

tDCS was significantly better in learning and recognition in new vocabularies and its benefit was maintained at one-week follow-up.

Martin, 2013 (Martin et al. 2013)

tDCS sham tDCS + CT tDCS + CT

10 sessions in 2 weeks, 2 mA, 30 min, 35 cm² Anode: F3 Cathode: right deltoid muscle

No significant difference on performance on the dual n-back task between tDCS + CT and sham tDCS + CT in post completion and follow-up.