Individual Differences in Asymmetric Resting-State Frontal Cortical Activity Modulate ERPs and Performance in a Global-Local Attention Task
Individual Differences in Asymmetric Resting-State Frontal Cortical Activity Modulate ERPs and Performance in a Global-Local Attention Task
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DOI：
10.1027/0269-8803/a000067
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发表时间：
2012-01-01
影响因子：
1.3
通讯作者：
De Cremer, David
中科院分区：
文献类型：
--
作者：
Boksem, Maarten A. S.;Kostermans, Evelien;De Cremer, David
最近的研究表明，个体接近动机的差异调节注意范围。反过来，接近和抑制与不同的神经系统相关，这些神经系统与相对额叶活动（RFA）的不对称性有关。在这里，我们调查了这种个体差异，在休息时不对称的半球活动，和自我报告措施的方法动机（测量的行为抑制系统，BIS/行为激活系统，BAS量表）将是预测的效率的注意力处理的全球和本地的视觉信息，作为索引的事件相关电位（ERP）和性能指标。在报告的实验中，参与者进行了视觉注意力的任务，其中他们被要求出席全球形状或局部组件的刺激。脑电图记录在执行任务期间，并在初始的“休息状态”的测量。结果表明，只有BAS-奖励反应子量表与休息期间的左侧RFA相关，而BIS、BAS-驱动力和BAS-乐趣寻求与更多的右侧RFA相关。重要的是，在需要全局聚焦的试验中，“静息状态”测量期间的左侧RFA与P3（右侧化）振幅增加和P3潜伏期减少相关。反过来，这些ERP与需要全球关注的试验的性能增强相关。这些结果提供了第一个证据，证明休息时左侧RFA与参与处理全局信息的右侧大脑机制效率提高之间存在正相关。
Recent research has demonstrated that individual differences in approach motivation modulate attentional scope. In turn, approach and inhibition have been related to different neural systems that are associated with asymmetries in relative frontal activity (RFA). Here, we investigated whether such individual differences in asymmetric hemispheric activity during rest, and self-report measures of approach motivation (as measured by the behavioral inhibition system, BIS/behavioral activation system, BAS scales) would be predictive of the efficiency of attentional processing of global and local visual information, as indexed by event-related potentials (ERPs) and performance measures. In the reported experiment, participants performed a visual attention task in which they were required to either attend to the global shape or the local components of presented stimuli. Electroencephalogram was recorded during task performance and during an initial "resting state" measurement. The results showed that only the BAS-Reward Responsiveness subscale was associated with left RFA during rest, while BIS, BAS-Drive, and BAS-Fun Seeking were associated with more right-lateralized RFA. Importantly, left RFA during the "resting state" measurement was associated with increased P3 (right-lateralized) amplitudes and decreased P3 latencies on trials requiring a global focus. In turn, these ERPs were associated with enhanced performance on trials requiring a global focus. These results provide the first evidence for a positive association between left RFA during rest and increased efficiency of right-lateralized brain mechanisms that are involved in processing global information.