P300 as an index of attention to self-relevant stimuli
P300 as an index of attention to self-relevant stimuli
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DOI：
10.1016/s0022-1031(03)00092-1
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发表时间：
2004-03-01
影响因子：
3.5
通讯作者：
Deldin, P
中科院分区：
文献类型：
--
作者：
Gray, HM;Ambady, N;Deldin, P
过去的研究表明，与自我相关的信息会优先进入有限的注意力资源库。然而，这些研究受到了限制，他们依赖于响应时间的措施，这需要公开的反应，并代表了多个阶段的信息处理的综合效果。本研究的一个目的是通过获得一个独立于反应的注意力分配指数，对信息处理的离散阶段的变化敏感，从而扩展过去的工作。另一个目标是探索潜在的时间过程中的差异敏感性自我相关的线索。我们评估了P300，所有ERP成分提供了注意力资源的指数，由自传体自我相关刺激（例如，自己的名字）。正如预期的那样，P300增强自我相关的刺激相对于控制刺激。此外，P300潜伏期的分析表明，自我相关的影响存在于与选择性注意相关的认知加工的高阶阶段。这些结果补充和扩展了以前的工作中的作用，自我相关性的材料进行进一步处理的选择。(C)2003年爱思唯尔公司All rights reserved.
Past work suggests that information related to the self receives 'preferential access' to the limited pool of attentional resources. However, these studies have been limited by their reliance on response-time measures, which require overt responding and represent the combined effects of multiple stages of information processing. One aim of the present study was to extend past work by obtaining a response-independent index of attention allocation sensitive to changes in discrete stages of information processing. An additional goal was to explore the potential time course of differential sensitivity to self-relevant cues. We assessed the P300, ail ERP component that provides an index of attentional resources, evoked by autobiographical self-relevant stimuli (e.g., one's own name). As expected, P300 was augmented for self-relevant stimuli relative to control stimuli. In addition, analyses of P300 latency indicate that the effects of self-relevance are present during higher-order stages of cognitive processing related to selective attention. These results complement and extend previous work on the role of self-relevance in the selection of material for further processing. (C) 2003 Elsevier Inc. All rights reserved.