What do fully visible primes and brain potentials reveal about morphological decomposition?
What do fully visible primes and brain potentials reveal about morphological decomposition?
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DOI：
10.1111/j.1469-8986.2010.01125.x
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发表时间：
2011-05-01
期刊：
影响因子：
3.7
通讯作者：
Clapp, Amanda
中科院分区：
文献类型：
--
作者：
Lavric, Aureliu;Rastle, Kathleen;Clapp, Amanda
为了研究意义在形态分解（{re-}+{play}）中的作用，研究者采用了启动范式。当分解在语义上是适当的（hunt - hunt）和不适当的（corner-CORN）时，知觉上隐蔽的启动都会导致促进，而对于完全可见的启动，只在前一种情况下观察到促进。我们研究了N400脑电位被时间锁定在以完全可见的素数开头的单词上。与300-380 ms相似，N400在语义“透明”条件（hunt - hunt）和语义“不透明”条件（corner-CORN）中同样衰减。在透明条件下，N400在380 ms后仍处于衰减状态，而在不透明条件下，N400在380 ms后恢复到非形态状态（妓院-肉汤）的水平。这种N400启动模式与一种基于正字法的形态分解机制相一致，该机制在后期被语义信息“许可”。
To examine the role of meaning in morphological decomposition ({re-}+{play}), researchers have employed the priming paradigm. Perceptually masked primes lead to facilitation both when decomposition is semantically appropriate (hunter-HUNT) and when it is not (corner-CORN), whereas with fully visible primes facilitation is observed only in the former case. We investigated the N400 brain potential time-locked to words preceded by fully visible primes. At similar to 300-380 ms, N400 was equally attenuated in the semantically "transparent" condition (hunter-HUNT) and semantically "opaque" condition (corner-CORN). In the transparent condition, N400 remained attenuated after 380 ms, whereas in the opaque condition it returned to the level of a nonmorphological form condition (brothel-BROTH). This pattern of N400 priming is consistent with an orthography-based, morphological decomposition mechanism, "licensed" at a later stage by semantic information.