Scrambling effects on the processing of Japanese sentences: An fMRI study
Scrambling effects on the processing of Japanese sentences: An fMRI study
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DOI：
10.1016/j.jneuroling.2008.07.005
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发表时间：
2009-03-01
影响因子：
2
通讯作者：
Kawashima, Ryuta
中科院分区：
文献类型：
--
作者：
Kim, Jungho;Koizumi, Masatoshi;Kawashima, Ryuta
本研究的目的是确认大脑皮层相关的混乱效应，自由的词序现象，已被观察到在各种跨语言的调查，但其机制仍然不清楚。日语自由语序排列的结构基础是由许多句法假设发展而来的，这些假设导致了最新的短语结构，即及物句中的宾语名词短语“移动”到比主语更高的位置，形成了一个包含先行语-空缺关系的不对称结构。这种由置乱操作形成的构形结构预示着置乱语句比规范语句具有更复杂的结构，并且前者对大脑内相关区域的认知过程需要更大的负担。基于这一假设，我们采用了一种实验方法，对典型的及物性句子（主语-宾语-动词）和他们的混乱的对应物（宾语-主语-动词）的日语及物性句子的全句呈现。结果表明，在理解混乱句时，左侧额下回（IFG）和左侧背侧前额叶皮层（DPFC）的激活程度高于标准句。这表明，根据以前的研究结果从神经语言学的角度来看，在日语中的混乱确实是一种语法操作，不对称的先行词间隙关系的分析策略需要在大脑中的额外的认知激活。(C)2008爱思唯尔有限公司保留所有权利。
The present study aims to confirm the cortical correlates of scrambling effects, a free word order phenomenon that has been observed in a variety of cross-linguistic investigations but whose mechanism still remains unclarified. Many syntax-oriented hypotheses on scrambling have been provided to develop the structural basis of the free word order permutation in Japanese, leading to the most recent phrasal architecture, in which the object noun phrase of a transitive sentence "moves" to a higher position than the subject to form an asymmetric structure including antecedent-gap relationships. Such a configurational structure formed by scrambling operation predicts that the scrambled sentences have a more complex structure than canonical sentences, and that the former requires a greater burden on cognitive processes in related areas within the brain. Based on this general assumption, we employed an experimental method of whole-sentence presentation of Japanese transitive sentences, for both canonical transitive sentences (Subject-Object-Verb) and their scrambled counterparts (Object-Subject-Verb). The result showed more activation at the left inferior frontal gyrus (IFG) and the left dorsal prefrontal cortex (DPFC) during the comprehension of scrambled sentences than that of canonical sentences. This indicates, in accordance with previous findings on scrambling from neurolinguistic perspectives, that the scrambling in Japanese is indeed one of the grammatical operations and that the parsing strategy for the asymmetric antecedent-gap relationship demands an additional cognitive activation in the brain. (C) 2008 Elsevier Ltd. All rights reserved.