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Intuitive interference in quantitative reasoning.

机译：定量推理中的直觉干扰。

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摘要

It is well known that surface features of a task can queue multiple reasoning strategies. Interference or conflict among the strategies is signaled by increasing reaction times and error rates. To determine the neural basis of this interference, we studied 14 volunteers using event-related fMRI, as they compared the perimeters of geometrical shapes in congruent (where the shapes' perimeter changed in the same direction as its area) and incongruent (where the shapes' perimeter was conserved but its area changed) conditions. We found evidence for the engagement of bilateral parietal lobe systems during congruent trials and incorrect incongruent trials. Activation of bilateral orbital frontal cortex was evident when subjects inhibited interference associated with processing the salient feature 'area' and correctly completed the perimeters in the incongruent condition. Varying the level of interference exerted by the unattended feature 'area' (filled vs. unfilled shapes) affected the relative level of activation of right parietal regions but not orbital frontal cortex suggesting that the former is responding to the degree of facilitation while the latter is responsive to the presence of conflict (rather than the degree of conflict).
机译：众所周知，任务的表面特征可以使多种推理策略排队。策略之间的干扰或冲突通过增加反应时间和错误率来表示。为了确定这种干扰的神经基础，我们使用事件相关的功能磁共振成像研究了14位志愿者，他们比较了全等（形状的周长沿与区域相同的方向变化）和非全等（形状的周长变化）的几何形状的周长。周长已保留，但其面积已发生变化）。我们发现证据表明在全等试验和不正确的全等试验中双侧顶叶系统的参与。当受试者抑制与处理突出特征“区域”相关的干扰并在不一致的情况下正确完成周长时，双眼眶额叶皮层的激活就很明显。无人看管的特征“区域”（实心形状与不实心形状）施加的干扰程度不同，会影响右侧顶叶区域激活的相对水平，但不会影响眼眶额叶皮质，这表明前者对促进程度有反应，而后者则是对促进程度的响应对冲突的存在做出反应（而不是冲突的程度）。

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