Prefrontal direct current stimulation modulates resting EEG and event-related potentials in healthy subjects: A standardized low resolution tomography (sLORETA) study

► Prefrontal tDCS (tDCS) reduces slow-wave activity. ► Prefrontal RtDCS tend to increase high-frequency activity. ► Prefrontal rtDCS improves performance (errors, accuracy) in a working memory task (n-back). ► This is accompanied by P2- and P3-amplitude increases. ► And by an increased left parahippocampal activity (sLORETA).