Fig. 4

a Simulation of 1.0Â mA current flow with an F3 anodal-F4 cathodal montage from Soterix TDCS Explore. Maximum field intensity is 0.25Â V/m. Current is disbursed throughout the frontal cortex. b Simulation of 1.0Â mA current flow with an F3 anodal-F4 cathodal montage from http://neuralengr.com/bonsai/. Maximum field intensity is 0.306Â V/m. Current flows throughout frontal cortex and penetrates to subcortical areas