Neurophysiological evidence for whole form retrieval of complex derived words: a mismatch negativity study.
Neurophysiological evidence for whole form retrieval of complex derived words: a mismatch negativity study.
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DOI：
10.3389/fnhum.2014.00886
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发表时间：
2014
影响因子：
2.9
通讯作者：
Pulvermüller F
中科院分区：
文献类型：
--
作者：
Hanna J;Pulvermüller F
复合词可以被看作是基本单位的组合，根据形态规则可以分解成词干和词缀。或者，复杂的形式可以存储为单个词汇条目并作为整个形式访问。本研究使用事件相关的潜在的大脑反应，能够索引的整体形式检索和组合处理，错配负（MMN），调查早期的大脑活动引起的形态复杂的派生词在德国。我们提出了由词干"sicher"（安全）或"sauber"（干净）与抽象名词化派生词缀--keit或--keit组合而成的复杂词，以形成一致的派生词："Sicherkeit"（安全）和"Sauberkeit"（干净），或不一致的派生伪词：*"Sicherkeit"和 *"Sauberkeit"。使用这种正交设计，它是可能的，以记录大脑的反应，-keit和-keit在一致和不一致的情况下，因此平衡声学方差。先前的研究表明，不一致的符号组合比一致的组合引起更强的MMN，但单个单词或结构存储为整个形式引起更强的MMN比假词或不存在的结构。我们发现，一致的派生词引起了一个更强的MMN比不一致的派生词，开始约150毫秒后感知的关键语素。这种模式的结果是一致的形态复杂的派生词作为词汇单位，或微型结构的整体形式存储。使用分布式源定位方法，MMN增强良好的派生复杂的话似乎是最突出的左下前颞，双侧上级顶叶和双侧后中央，超边缘区。此外，神经生理学结果反映了衍生形式的频率，从而为整个形式存储和反对组合机制提供了进一步的证据。
Complex words can be seen as combinations of elementary units, decomposable into stems and affixes according to morphological rules. Alternatively, complex forms may be stored as single lexical entries and accessed as whole forms. This study uses an event-related potential brain response capable of indexing both whole-form retrieval and combinatorial processing, the Mismatch Negativity (MMN), to investigate early brain activity elicited by morphologically complex derived words in German. We presented complex words consisting of stems “sicher” (secure), or “sauber” (clean) combined with abstract nominalizing derivational affixes -heit or -keit, to form either congruent derived words: “Sicherheit” (security) and “Sauberkeit” (cleanliness), or incongruent derived pseudowords: *“Sicherkeit”, and *“Sauberheit”. Using this orthogonal design, it was possible to record brain responses for -heit and -keit in both congruent and incongruent contexts, therefore balancing acoustic variance. Previous research has shown that incongruent combinations of symbols elicit a stronger MMN than congruent combinations, but that single words or constructions stored as whole forms elicit a stronger MMN than pseudowords or non-existent constructions. We found that congruent derived words elicited a stronger MMN than incongruent derived words, beginning about 150 ms after perception of the critical morpheme. This pattern of results is consistent with whole-form storage of morphologically complex derived words as lexical units, or mini-constructions. Using distributed source localization methods, the MMN enhancement for well-formed derivationally complex words appeared to be most prominent in the left inferior anterior-temporal, bilateral superior parietal and bilateral post-central, supra-marginal areas. In addition, neurophysiological results reflected the frequency of derived forms, thus providing further converging evidence for whole form storage and against a combinatorial mechanism.
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