Department of Psychology, Brigham Young University, Provo, UT 84602, USA.
Psychophysiology. 2011 Dec;48(12):1621-30. doi: 10.1111/j.1469-8986.2011.01265.x. Epub 2011 Aug 1.
We investigated the effects of repetition priming on indices of conflict adaptation. Event-related potentials (ERPs) were obtained while 210 healthy individuals (111 female, 99 male) completed an Eriksen flanker task. Error rates, response times (RTs), and N2 and P3 amplitudes showed significant conflict adaptation (i.e., previous-trial congruencies influenced current-trial measures). After omitting trials with stimulus-response repetitions, RTs did not index conflict adaptation, but did show switching effects; error rates and N2 and P3 amplitudes remained sensitive to conflict adaptation. P3 amplitudes positively correlated with RTs. N2 amplitudes correlated with RTs only on incongruent trials following congruent trials after excluding repetitions. Results indicate that neural indices of conflict monitoring remain reliably associated with conflict adaptation effects in the absence of RT adjustments upon omission of repetition priming effects.
我们研究了重复启动对冲突适应指标的影响。210 名健康个体（111 名女性，99 名男性）完成了埃里森（Eriksen）侧翼任务，同时获得了事件相关电位（ERPs）。错误率、反应时间（RT）、N2 和 P3 振幅显示出明显的冲突适应（即前一试次的一致性影响当前试次的测量结果）。在排除具有刺激-反应重复的试次后，RT 不再指示冲突适应，但确实显示出转换效应；错误率和 N2 和 P3 振幅仍然对冲突适应敏感。P3 振幅与 RT 呈正相关。仅在排除重复启动效应后，在跟随一致性试次的不一致性试次上，N2 振幅与 RT 相关。结果表明，在排除重复启动效应的 RT 调整后，冲突监测的神经指标仍然与冲突适应效应可靠相关。
