Figure 3
From: Augmentation of working memory training by transcranial direct current stimulation (tDCS)

At baseline, T4, and T5, performance (d′) on the 3-back near-transfer task was measured without concurrent tDCS to test the transfer of tDCS-enhanced adaptive n-back training gains. Error-bars represent the standard error (SEM). *Indicates significant t-tests (p < 0.05).