Max Planck Institute for Neurological Research, Cognitive Neurology Group, Gleueler Stasse 50, Cologne, Germany.
Psychophysiology. 2009 Nov;46(6):1288-98. doi: 10.1111/j.1469-8986.2009.00860.x. Epub 2009 Jul 1.
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.
采用 Eriksen 侧翼任务的箭头版本来研究冲突对错误相关负波（ERN）的影响。通过改变侧翼和目标箭头之间的距离（近和远条件）来调节冲突程度。行为实验的错误率和反应时间数据用于适应该任务的连接主义模型。该模型基于冲突监测理论，并模拟了行为和事件相关电位数据。计算模型预测 FAR 不兼容（低冲突条件）比 CLOSE 不兼容错误（高冲突条件）的 ERN 振幅增加。随后的 ERP 实验证实了模型预测。计算模型用远试验中更大的反应后冲突来解释这一发现。此外，N2 和 LRP 的数据和模型预测支持 ERN 的冲突解释。
