Dissociation of response conflict, attentional selection, and expectancy with functional magnetic resonance imaging
Dissociation of response conflict, attentional selection, and expectancy with functional magnetic resonance imaging
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DOI：
10.1073/pnas.97.15.8728
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发表时间：
2000-07-18
影响因子：
11.1
通讯作者：
Crone, EA
中科院分区：
文献类型：
--
作者：
Casey, BJ;Thomas, KM;Crone, EA
两种不同的注意网络与视觉空间注意和冲突解决有关。在大多数情况下，这两个网络中的一个是活跃的，或者两者都在活动中增加。通过使用功能性磁共振成像和侧翼任务，我们显示的条件下，其中一个网络（前注意系统）的活动增加，而其他（视觉空间注意系统）减少，表明注意力冲突和选择是独立的方面的注意。此外，我们区分了参与不同形式冲突的神经系统。具体来说，我们在预期中的简单违反期间分离基底神经节和大脑皮层的活动模式（即，事件频率的突然变化）与前注意系统中的活动模式的差异，特别是与反应冲突相关，如反应延迟时间更长和错误更多所证明的。这些数据为理解整合注意网络提供了一种系统水平的方法。
Two different attentional networks have been associated with visuospatial attention and conflict resolution. In most situations either one of the two networks is active or both are increased in activity together. By using functional magnetic resonance imaging and a flanker task, we show conditions in which one network (anterior attention system) is increased in activity whereas the other (visuospatial attention system) is reduced, showing that attentional conflict and selection are separate aspects of attention. Further, we distinguish between neural systems involved in different forms of conflict. Specifically, we dissociate patterns of activity in the basal ganglia and insula cortex during simple violations in expectancies (i.e., sudden changes in the frequency of an event) from patterns of activity in the anterior attention system specifically correlated with response conflict as evidenced by longer response latencies and more errors. These data provide a systems-level approach in understanding integrated attentional networks.