Falkenstein M, Hoormann J, Hohnsbein J
Institut für Arbeitsphysiologie, Universität Dortmund.
Z Exp Psychol. 1997;44(1):117-38.
Event-related potentials (ERPs) of error trials in choice tasks and Go/Nogo tasks are found to be considerably different from the ERPs of the correct trials: In error trial ERPs there is an additional negative (Ne) and an additional positive component (Pe) compared to correct trials. Amplitude and latency variation of both components in different experiments supports the hypothesis that these components reflect different aspects of error processing. The Ne is interpreted as a real-time correlate of error detection, as defined by a mismatch between cognitive representations of the erroneous response and the correct response. The variation of Pe with experimental variables is different from that of the Ne and it also from that of positive components in correct trials, and may therefore reflect an additional aspect of error processing, such as change of response strategies.
研究发现，选择任务和Go/Nogo任务中错误试验的事件相关电位（ERP）与正确试验的ERP有显著差异：与正确试验相比，错误试验的ERP中存在一个额外的负向成分（Ne）和一个额外的正向成分（Pe）。不同实验中这两个成分的振幅和潜伏期变化支持了这样一种假设，即这些成分反映了错误处理的不同方面。Ne被解释为错误检测的实时相关指标，其定义为错误反应和正确反应的认知表征之间的不匹配。Pe随实验变量的变化不同于Ne，也不同于正确试验中的正向成分，因此可能反映了错误处理的另一个方面，例如反应策略的改变。
