Smith B D, Meyers M, Kline R
Department of Psychology, University of Maryland, College Park 20742.
Biol Psychol. 1989 Aug;29(1):11-26. doi: 10.1016/0301-0511(89)90047-1.
Cerebral organization for the processing of emotion and for the differential processing of affect and cognition have thus far been studied exclusively in right-handed subjects. Since handedness is related to cerebral dominance, our understanding of the neural processing of affect and cognition should be further enhanced by the study of sinistral subjects. The present study examined the differential parietal processing of emotional stimuli under affective and cognitive conditions in left-handed subjects. The subjects were exposed to emotional stimuli presented under affective and cognitive instructional sets and to neutral, control stimuli. Bilateral electroencephalographic and bilateral electrodermal activity data showed greater responsiveness to emotional than neutral stimuli but no differential lateralization of affect and cognition in left-handed subjects. Results also showed that female subjects were more responsive to emotional stimuli than male subjects. Results were interpreted as suggesting that left-handed individuals may be less strongly lateralized for the differential processing of affect and cognition than right-handed individuals and that females may have greater focal organization for the processing of emotion than males.
迄今为止，有关情感加工以及情感与认知差异加工的大脑组织研究仅在右利手个体中进行。由于利手与大脑优势半球相关，因此对左利手个体的研究应能进一步增进我们对情感与认知神经加工的理解。本研究考察了左利手个体在情感和认知条件下对情感刺激的顶叶差异加工。研究对象被给予在情感和认知指导语下呈现的情感刺激以及中性对照刺激。双侧脑电图和双侧皮肤电活动数据表明，与中性刺激相比，情感刺激引起了更强的反应，但左利手个体在情感与认知方面不存在差异的偏侧化。结果还显示，女性研究对象对情感刺激的反应比男性研究对象更强烈。研究结果的解释是，与右利手个体相比，左利手个体在情感与认知差异加工方面的偏侧化程度可能较弱，而且女性在情感加工方面可能比男性具有更集中的大脑组织。
