Regarding emotional and affective states, tDCS has been well-studied for the treatment of patients with Major Depression, with improvement in depression scores and response rates supported by recent meta-analyses (Cohen's d = 0.74; Odds Ratio 2.44) (Brunoni et al., 2016) and (Hedge's g = 0.37; Odds Ratio 1.63) (Shiozawa et al., 2014).