title: Source localization (LORETA) of the error-related-negativity (ERN/Ne) and positivity (Pe).
abstract: We investigated error processing of 39 subjects engaging the Eriksen flanker task. In all 39 subjects a pronounced negative deflection (ERN/Ne) and a later positive component (Pe) were observed after incorrect as compared to correct responses. The neural sources of both components were analyzed using LORETA source localization. For the negative component (ERN/Ne) we found significantly higher brain electrical activity in medial prefrontal areas for incorrect responses, whereas the positive component (Pe) was localized nearby but more rostral within the anterior cingulate cortex (ACC). Thus, different neural generators were found for the ERN/Ne and the Pe, which further supports the notion that both error-related components represent different aspects of error processing.
authors.affiliation: Department of Psychiatry and Psychotherapy, University Hospital Würzburg, 97080, Germany. Martin.Herrmann@mail.uni-wuerzburg.de
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Herrmann
authors.forename: Josefine
authors.initials: J
authors.lastname: Römmler
authors.forename: Ann-Christine
authors.initials: AC
authors.lastname: Ehlis
authors.forename: Anke
authors.initials: A
authors.lastname: Heidrich
authors.forename: Andreas J
authors.initials: AJ
authors.lastname: Fallgatter
mesh_terms: D000328:Adult; D001931:Brain Mapping / Q000379:methods; D003071:Cognition / Q000502:physiology; D004569:Electroencephalography; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006179:Gyrus Cinguli / Q000502:physiology*; D006801:Humans; D008297:Male; D017397:Prefrontal Cortex / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*