Attentional Control in Anterior Cingulate Cortex Based on Probabilistic Cueing
Attentional Control in Anterior Cingulate Cortex Based on Probabilistic Cueing
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DOI：
10.1162/jocn.2010.21435
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发表时间：
2011-03-01
影响因子：
3.2
通讯作者：
Roelofs, Ardi
中科院分区：
文献类型：
--
作者：
Aarts, Esther;Roelofs, Ardi
在Stroop类任务中，行为测量和ACC活动的冲突效应在不一致的试验后比一致的试验后更小。研究人员没有发现一致的这些顺序效应在ACC是否可以驱动经验的不一致性或也由预期的目标类型。在目前的功能磁共振成像实验中，我们专门操纵的期望，通过使用符号线索预测与75%或50%的确定性不一致或一致的目标在Stroop样任务。行为和背侧ACC数据复制以前的顺序效应，与冲突的影响是最小的目标的线索，预测与75%的确定性不一致的目标。然而，这些影响不是由经历过的冲突驱动的，而是由象征性的暗示驱动的。这些结果表明，差异注意控制活动后，ACC的概率提示，控制调整驱动的期望值的变化提供了证据。
In Stroop-like tasks, conflict effects in behavioral measures and ACC activity are smaller on trials following an incongruent trial than following a congruent one. Researchers have found no agreement on whether these sequential effects in ACC can be driven by experienced incongruency only or also by expectations about target types. In the present fMRI experiment, we specifically manipulated the expectancies by using symbolic cues predicting with 75% or 50% certainty the incongruent or congruent targets in a Stroop-like task. Both behavioral and dorsal ACC data replicated previous sequential effects, with conflict effects being smallest for targets following the cues that predicted with 75% certainty the incongruent targets. However, these effects were not driven by experienced conflict but by symbolic cues. These results demonstrate differential attentional control activity in ACC after probabilistic cueing, providing evidence for control adjustments driven by changes in expectation.