Many roads lead to recognition: electrophysiological correlates of familiarity derived from short-term masked repetition priming.
Many roads lead to recognition: electrophysiological correlates of familiarity derived from short-term masked repetition priming.
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DOI：
10.1016/j.neuropsychologia.2012.07.036
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发表时间：
2012-11
期刊：
影响因子：
2.6
通讯作者：
Paller KA
中科院分区：
文献类型：
--
作者：
Lucas HD;Taylor JR;Henson RN;Paller KA
熟悉性记忆背后的神经机制已被广泛研究，但共识的理解仍然难以捉摸。行为学证据表明，熟悉性有时与内隐记忆（即启动）的实例有共同的来源，因为引起启动的处理流畅性的提高也会产生熟悉性。这一解释的一个未被充分认识的含义是，神经活动模式似乎是在一般意义上索引熟悉度，而不是反映与流利相关的识别前体。在这一原理的一个新颖的例证中，我们在视觉单词的识别测试中检查了大脑的电位。在两个实验中，通过隐藏重复启动，有选择地提高了一半测试线索的流畅性。与之前的研究结果相同的是，与不相关的单词相比，紧接在一个匹配的掩词前面的单词被认为是“旧的”的比例更高。此外，与不相关的掩蔽词相比，N400电位对匹配前的测试线索更积极。类似的N400差异被观察到，当假警报与正确拒绝未研究的单词子集之前匹配的屏蔽词进行比较。这些N400效应在地形上与其他与所研究单词熟悉度相关的电位分离。我们的结论是，熟悉的经验可以有不同的神经关联信号的不同的神经认知前体的识别判断的操作。识别记忆的神经基础的概念化必须考虑到产生熟悉记忆的多种机制。
The neural mechanisms that underlie familiarity memory have been extensively investigated, but a consensus understanding remains elusive. Behavioral evidence suggests that familiarity sometimes shares sources with instances of implicit memory known as priming, in that the same increases in processing fluency that give rise to priming can engender familiarity. One underappreciated implication of this account is that patterns of neural activity that appear to index familiarity in a generic sense may instead reflect fluency-related precursors of recognition. In a novel illustration of this principle, we examined brain potentials during recognition tests for visual words. In two experiments, fluency was selectively enhanced for half of the test cues via masked repetition priming. Replicating previous findings, the proportion of words endorsed as “old” was greater for words immediately preceded by a matching masked word versus an unrelated one. In addition, N400 potentials were more positive for test cues preceded by matching versus unrelated masked words. Similar N400 differences were observed when false alarms were compared to correct rejections for the subset of unstudied words that were preceded by matching masked words. These N400 effects were topographically dissociable from other potentials that correlated with familiarity for studied words. We conclude that experiences of familiarity can have different neural correlates that signal the operation of distinct neurocognitive precursors of recognition judgments. Conceptualizations of the neural basis of recognition memory must account for a plurality of mechanisms that produce familiarity memory.
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影响因子：
24.8
作者：
Kutas M;Federmeier KD
通讯作者：
Federmeier KD
影响因子：
3.2
作者：
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通讯作者：
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DOI：
10.1016/j.cogbrainres.2005.01.003
发表时间：
2005-06-01
期刊：
COGNITIVE BRAIN RESEARCH
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
5.4
作者：
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通讯作者：
MANDLER, G