Wang Wei, Li Bingbing, Gao Chuanji, Guo Chunyan
MOE Key Laboratory of Modern Teaching Technology, Shaanxi Normal University, Xi'an 710062, PR China.
School of Education Science, Jiangsu Normal University, Xuzhou 221116, PR China.
Brain Cogn. 2018 Nov;127:1-12. doi: 10.1016/j.bandc.2018.07.002. Epub 2018 Sep 1.
Recognition memory can be driven by both perceptual and conceptual fluency, but when and to what extent they contribute to recognition memory remains an open question. The present study used event-related potentials (ERPs) to investigate the neural correlates of perceptual and conceptual fluency, when they gave rise to recognition. We manipulated the perceptual and conceptual fluency of retrieval cues in the recognition test independently to obtain the effects of different types of fluency. Behavioral results showed that perceptual fluency selectively affected K hits, while conceptual fluency affected R hits and K false alarms. In addition, conceptual fluency facilitated the response times of R hits. The ERP results showed that perceptual fluency effect appeared at 100-200 ms and conceptual fluency effect appeared at 300-500 ms. The parietal LPC peaked earlier for conceptually primed trials compared to unprimed trials. These results suggest that perceptual and conceptual fluency had different effects on recognition judgments, and these two types of fluency can be delineated by distinct ERP correlates. The current finding indicates that unconscious memory processes can support recognition and have provided insights into the underlying mechanism involved in recognition memory.
再认记忆可由知觉流畅性和概念流畅性驱动，但它们何时以及在多大程度上对再认记忆有贡献仍是一个悬而未决的问题。本研究使用事件相关电位（ERP）来探究知觉流畅性和概念流畅性在引发再认时的神经关联。我们在再认测试中独立操纵检索线索的知觉流畅性和概念流畅性，以获得不同类型流畅性的影响。行为结果表明，知觉流畅性选择性地影响正确肯定反应，而概念流畅性影响正确否定反应和错误肯定反应。此外，概念流畅性加快了正确否定反应的反应时间。ERP结果显示，知觉流畅性效应出现在100 - 200毫秒，概念流畅性效应出现在300 - 500毫秒。与未启动试验相比，概念启动试验的顶叶晚期正成分峰值出现得更早。这些结果表明，知觉流畅性和概念流畅性对再认判断有不同影响，并且这两种类型的流畅性可以通过不同的ERP关联来区分。当前的发现表明，无意识记忆过程可以支持再认，并为再认记忆所涉及的潜在机制提供了见解。
