Wacker Jan, Chavanon Mira-Lynn, Leue Anja, Stemmler Gerhard
Faculty of Psychology, Philipps-Universität Marburg, Germany.
Emotion. 2008 Apr;8(2):232-49. doi: 10.1037/1528-3542.8.2.232.
The measurement of anterior electroencephalograph (EEG) asymmetries has become an important standard paradigm for the investigation of affective states and traits. Findings in this area are typically interpreted within the motivational direction model, which suggests a lateralization of approach and withdrawal motivational systems to the left and right anterior region, respectively. However, efforts to compare this widely adopted model with an alternative account-which relates the left anterior region to behavioral activation independent of the direction of behavior (approach or withdrawal) and the right anterior region to goal conflict-induced behavioral inhibition-are rare and inconclusive. Therefore, the authors measured the EEG in a sample of 93 young men during emotional imagery designed to provide a critical test between the 2 models. The results (e.g., a correlation between left anterior activation and withdrawal motivation) favor the alternative model on the basis of the concepts of behavioral activation and behavioral inhibition. In addition, the present study also supports an association of right parietal activation with physiological arousal and the conceptualization of parietal EEG asymmetry as a mediator of emotion-related physiological arousal.
脑电图（EEG）前侧不对称性测量已成为研究情感状态和特质的重要标准范式。该领域的研究结果通常在动机方向模型中进行解释，该模型表明趋近和退缩动机系统分别在左前和右前区域实现功能侧化。然而，将这种广泛采用的模型与另一种观点进行比较的研究很少，且尚无定论。另一种观点认为，左前区域与独立于行为方向（趋近或退缩）的行为激活相关，而右前区域与目标冲突引起的行为抑制相关。因此，作者对93名年轻男性样本在进行情绪意象时的脑电图进行了测量，旨在对这两种模型进行关键测试。基于行为激活和行为抑制的概念，结果（例如左前激活与退缩动机之间的相关性）支持了另一种模型。此外，本研究还支持右顶叶激活与生理唤醒之间的关联，以及将顶叶脑电图不对称性概念化为与情绪相关的生理唤醒的调节因子。
