Dorsal anterior cingulate cortex resolves conflict from distracting stimuli by boosting attention toward relevant events
Dorsal anterior cingulate cortex resolves conflict from distracting stimuli by boosting attention toward relevant events
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DOI：
10.1093/cercor/bhh125
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发表时间：
2005-02-01
期刊：
影响因子：
3.7
通讯作者：
Woldorff, MG
中科院分区：
文献类型：
--
作者：
Weissman, DH;Gopalakrishnan, A;Woldorff, MG
在日常生活中，我们经常将更多的注意力集中在与行为相关的刺激上，以限制对分散注意力的事件的处理。例如，在嘈杂的社交聚会中，当分散注意力的声音干扰谈话时，我们会将更多的注意力集中在感兴趣的说话者身上，以便更好地理解他或她的讲话。在本研究中，我们调查是否背侧/尾侧区域的前扣带皮层（dACC），认为作出了重大贡献的认知控制，提高注意力资源对行为相关的刺激作为一种手段，限制处理分心的事件。16名健康受试者进行了一个线索的全球/局部选择性注意任务，而大脑活动记录与事件相关的功能磁共振成像。与我们的假设一致，在分散注意力的事件中，更大的dACC活动预测来自这些相同事件的干扰的行为测量减少。dACC的活动也不同的线索，参加全球与本地功能即将到来的视觉对象，进一步表明在引导注意力向任务相关的刺激的作用。我们的研究结果表明，dACC在将注意力集中在行为相关刺激上的作用，特别是当我们的行为目标的实现受到分心事件的威胁时。
In everyday life, we often focus greater attention on behaviorally relevant stimuli to limit the processing of distracting events. For example, when distracting voices intrude upon a conversation at a noisy social gathering, we concentrate more attention on the speaker of interest to better comprehend his or her speech. In the present study, we investigated whether dorsal/caudal regions of the anterior cingulate cortex (dACC), thought to make a major contribution to cognitive control, boost attentional resources toward behaviorally relevant stimuli as a means for limiting the processing of distracting events. Sixteen healthy participants performed a cued global/local selective attention task while brain activity was recorded with event-related functional magnetic resonance imaging. Consistent with our hypotheses, greater dACC activity during distracting events predicted reduced behavioral measures of interference from those same events. dACC activity also differed for cues to attend to global versus local features of upcoming visual objects, further indicating a role in directing attention toward task-relevant stimuli. Our findings indicate a role for dACC in focusing attention on behaviorally relevant stimuli, especially when the achievement of our behavioral goals is threatened by distracting events.