Meyers M B, Smith B D
Biol Psychol. 1987 Feb;24(1):67-84. doi: 10.1016/0301-0511(87)90100-1.
The cerebral processing of emotion has been the subject of a number of recent studies, but results relating to hemispheric asymmetry have been quite mixed. The present study attempted to clarify and extend findings in this area by examining the differential effects of cognitive and affective sets on hemisphere asymmetry under conditions of nonverbal emotional stimulation. Electroencephalographic (EEG) data, recorded bilaterally, showed that differential hemispheric processing interacted with emotion (positive or negative), condition (cognitive or affective), and sex. In those emotion/condition combinations where hemispheric asymmetry was observed, there was greater activity in the left hemisphere than in the right. In addition, positive affect produced greater asymmetry than negative, and females showed greater activity in response to positive emotional stimuli than did males. Further, affective conditions yielded higher levels of activity than did cognitive. Finally, electrodermal activity showed lateralization effects as a differential function of cognitive and affective conditions.
情感的大脑加工过程是近期多项研究的主题，但有关半球不对称性的研究结果却相当复杂。本研究试图通过考察在非言语情感刺激条件下认知和情感定势对半球不对称性的不同影响，来澄清和拓展该领域的研究发现。双侧记录的脑电图（EEG）数据表明，半球加工差异与情绪（积极或消极）、条件（认知或情感）以及性别相互作用。在观察到半球不对称性的那些情绪/条件组合中，左半球的活动比右半球更活跃。此外，积极情感比消极情感产生更大的不对称性，并且女性对积极情感刺激的反应比男性表现出更活跃。此外，情感条件下的活动水平高于认知条件。最后，皮肤电活动表现出作为认知和情感条件差异函数的偏侧化效应。
