Hartikainen Kaisa M, Ogawa Keith H, Soltani Maryam, Knight Robert T
Helen Wills Neuroscience Institute and Department of Psychology, Tolman Hall, University of California, Berkeley, California, USA.
Neuroreport. 2007 Dec 3;18(18):1929-33. doi: 10.1097/WNR.0b013e3282f1ca18.
Rapid interaction of the emotional and attentional networks is critical for adaptive behavior. Here, we examined the effects of emotional stimulation on hemifield attention allocation using event-related potential and behavioral measures. Participants performed a visual-discrimination task on nonemotional targets presented randomly in the left or right hemifield. A brief task-irrelevant emotional (pleasant or unpleasant; 150-ms duration) or neutral picture was presented centrally 350 ms before the next target (150-ms duration). Unpleasant stimuli interfered with the left visual field attention capacity, slowing behavioral responses to attended left field stimuli. In keeping with the behavioral data, event-related potential responses to nonemotional attended left field stimuli were reduced over the right parietal regions when preceded by an unpleasant event. The results provide electrophysiological and behavioral evidence that unpleasant, emotionally arousing stimuli interfere with the right hemisphere-dependent attention capacity.
情绪网络和注意力网络的快速互动对适应性行为至关重要。在此，我们使用事件相关电位和行为测量方法，研究了情绪刺激对半球注意力分配的影响。参与者对随机出现在左半视野或右半视野的非情绪目标执行视觉辨别任务。在下一个目标（持续150毫秒）出现前350毫秒，在中央呈现一个短暂的与任务无关的情绪性（愉快或不愉快；持续150毫秒）或中性图片。不愉快的刺激干扰了左视野的注意力容量，减缓了对被关注的左视野刺激的行为反应。与行为数据一致，当不愉快事件先出现时，对非情绪性被关注的左视野刺激的事件相关电位反应在右侧顶叶区域有所降低。结果提供了电生理和行为证据，表明不愉快的、引起情绪唤醒的刺激会干扰依赖于右半球的注意力容量。
