tDCS and Inhibitory Control in PTSD

Subjects will receive 20 minutes of multifocal transcranial direct current stimulation. The anode will be placed over the frontal pole (FC6, 10-10 EEG) and will be surrounded by 5 return electrodes (cathodes). Current will be set at 1.5mA and will be ramped in/ out at the beginning and end of the 15-minutes of stimulation over the course of 15 seconds.