Smith B D, Kline R, Lindgren K, Ferro M, Smith D A, Nespor A
Department of Psychology, University of Maryland, College Park 20742, USA.
Biol Psychol. 1995 Feb;39(2-3):143-57. doi: 10.1016/0301-0511(94)00968-4.
The purpose of the present study was to better understand both the lateralized hemispheric processing of emotion and the differential neural processing of arousal in extraverts and introverts. We preselected right-handed male and female extraverts and introverts who were high in emotional lability. Each subject was exposed to two positive and two negative emotional stimuli under each of three counterbalanced conditions, including affective, cognitive, and neutral, while EEG and electrodermal activity (EDA) were recorded. Results showed that introverts are more aroused and that extraversion interacts with gender to produce differentiated patterns of lateralized neural activity. In addition, affective conditions produced higher levels of arousal than did cognitive or neutral conditions, particularly in the left hemisphere and under negative as opposed to positive stimuli. Finally, the hemispherically differentiated processing of positive and negative stimuli was affected by the contextual conditions under which they were experienced.
本研究的目的是更好地理解外向者和内向者在情绪方面的半球侧化处理以及唤醒的差异神经处理。我们预先挑选了情绪不稳定程度较高的右利手男性和女性外向者与内向者。在三种平衡条件下，包括情感、认知和中性条件，让每个受试者接触两种积极和两种消极情绪刺激，同时记录脑电图（EEG）和皮肤电活动（EDA）。结果表明，内向者更容易被唤醒，外向性与性别相互作用，产生不同的半球侧化神经活动模式。此外，情感条件比认知或中性条件产生更高水平的唤醒，特别是在左半球，并且在消极刺激而非积极刺激下。最后，积极和消极刺激的半球分化处理受到其所处情境条件的影响。
