Modulation of the error-related negativity by response conflict.
An arrow version of the Eriksen flanker task was employed to investigate the influence of conflict on the error-related negativity (ERN). The degree of conflict was modulated by varying the distance between flankers and the target arrow (CLOSE and FAR conditions). Error rates and reaction time data from a behavioral experiment were used to adapt a connectionist model of this task. This model was based on the conflict monitoring theory and simulated behavioral and event-related potential data. The computational model predicted an increased ERN amplitude in FAR incompatible (the low-conflict condition) compared to CLOSE incompatible errors (the high-conflict condition). A subsequent ERP experiment confirmed the model predictions. The computational model explains this finding with larger post-response conflict in far trials. In addition, data and model predictions of the N2 and the LRP support the conflict interpretation of the ERN.
Danielmeier
Claudia
C
Max Planck Institute for Neurological Research, Cognitive Neurology Group, Gleueler Stasse 50, Cologne, Germany. c.danielmeier@nf.mpg.de
Wessel
Jan R
JR
Steinhauser
Marco
M
Ullsperger
Markus
M
D000293:Adolescent; D000328:Adult; D003220:Conflict, Psychological; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology; D056344:Executive Function / Q000502:physiology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010775:Photic Stimulation; D011930:Reaction Time / Q000502:physiology; D055815:Young Adult