On Known Unknowns: Fluency and the Neural Mechanisms of Illusory Truth.
On Known Unknowns: Fluency and the Neural Mechanisms of Illusory Truth.
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DOI：
10.1162/jocn_a_00923
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发表时间：
2016-05
影响因子：
3.2
通讯作者：
Cabeza R
中科院分区：
文献类型：
--
作者：
Wang WC;Brashier NM;Wing EA;Marsh EJ;Cabeza R
“虚幻真理”效应是指重复一个陈述增加其被判断为真实的可能性的现象。这一现象对于我们如何相信可能误导或未知的经常重复的信息具有重要意义。行为证据表明，流畅性或主观轻松的经验，而处理语句的基础上，这种效果。这表明，虚幻的真相应该是由以前与流畅性相关的大脑区域介导的，比如嗅周皮层（PRC）。为了研究这种可能性，我们用fMRI扫描了参与者，同时他们对未知陈述的真实性进行了评级，其中一半是早些时候提出的（即，重复）。唯一显示重复和感知真相评级之间相互作用的大脑区域是PRC，其中活动随着重复的真相评级而增加，但不是新的陈述。这一发现支持了虚假真相是由流利性机制介导的假设，并进一步加强了PRC和流利性之间的联系。
The “illusory truth” effect refers to the phenomenon whereby repetition of a statement increases its likelihood of being judged true. This phenomenon has important implications for how we come to believe oft-repeated information that may be misleading or unknown. Behavioral evidence indicates that fluency or the subjective ease experienced while processing a statement underlies this effect. This suggests that illusory truth should be mediated by brain regions previously linked to fluency, such as the perirhinal cortex (PRC). To investigate this possibility, we scanned participants with fMRI while they rated the truth of unknown statements, half of which were presented earlier (i.e., repeated). The only brain region that showed an interaction between repetition and ratings of perceived truth was PRC, where activity increased with truth ratings for repeated, but not for new, statements. This finding supports the hypothesis that illusory truth is mediated by a fluency mechanism and further strengthens the link between PRC and fluency.