The study aims to explore the significance of event-related potentials (ERPs) and event-related brain oscillations (EROs) (delta, theta, alpha, beta, gamma power) in response to emotional (fear, happiness, sadness) when compared with neutral faces during 180-250 post-stimulus time interval. The ERP results demonstrated that the emotional face elicited a negative peak at approximately 230 ms (N2). Moreover, EEG measures showed that motivational significance of face (emotional vs. neutral) could modulate the amplitude of EROs, but only for some frequency bands (i.e. theta and gamma bands). In a second phase, we considered the resemblance of the two EEG measures by a regression analysis. It revealed that theta and gamma oscillations mainly effect as oscillation activity at the N2 latency. Finally, a posterior increased power of theta was found for emotional faces.

中文翻译：

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面部表情识别中的事件相关振荡（EROs）和事件相关电位（ERP）比较。

这项研究旨在探讨与情绪相关（恐惧，幸福，悲伤）相比，与事件相关的电位（ERP）和与事件相关的脑震荡（EROs）（δ，θ，α，β，γ能量）的重要性。在刺激后180-250时间间隔内保持中性面孔。ERP结果表明，情绪面孔在大约230毫秒（N2）处引起一个负峰值。此外，脑电图测量表明，面部的动机意义（情绪对中性）可以调节ERO的幅度，但仅在某些频带（即theta和gamma频带）上才起作用。在第二阶段，我们通过回归分析考虑了两个EEG度量的相似性。结果表明，θ和γ振荡主要在N2潜伏期作为振荡活动起作用。最后，