Semantic integration in reading: engagement of the right hemisphere during discourse processing
Semantic integration in reading: engagement of the right hemisphere during discourse processing
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DOI：
10.1093/brain/122.7.1317
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发表时间：
1999-07-01
期刊：
影响因子：
14.5
通讯作者：
Sereno, MI
中科院分区：
文献类型：
--
作者：
St George, M;Kutas, M;Sereno, MI
我们使用功能核磁共振对10名个体阅读段落时涉及到的大脑区域进行了检查，这些段落有没有标题，逐字理解。功能数据来自20个相邻的5 mm轴位脑片，在有标题和无标题的情况下，话语加工与两侧大脑半球额叶和颞叶下部区域的激活有关，而且，无标题的右脑激活显著多于有标题的段落。更具体地说，我们发现：(I)与有标题段落相比，无标题段落在两个大脑半球的下颞沟有更大的激活；(Ii)对无标题段落的反应，右侧大脑半球中颞沟的平均激活量比有标题段落大，而在左侧颞沟则相反，这与先前对右脑受损个体的研究一致，我们认为，在话语加工过程中，右侧中颞区可能对实现整体连贯所需的整合过程特别重要。
We examined the brain areas involved in discourse processing by using functional MRI in 10 individuals as they read paragraphs, with or without a title, word by word for comprehension. Functional data were collected from 20 adjacent 5 mm axial slices, Discourse processing was associated with activation in inferior frontal and temporal regions of both cerebral hemispheres in the titled and untitled conditions, Moreover, there was substantially more right hemisphere activation for untitled than for the titled paragraphs. More specifically we found: (i) greater activation in the inferior temporal sulcus of both hemispheres for untitled than titled paragraphs; (ii) greater average volume of activation in response to untitled than titled paragraphs in the middle temporal sulcus of the right hemisphere and the reverse pattern in the left middle temporal sulcus, Consistent with previous studies of individuals with right hemisphere damage, we suggest that the right middle temporal regions may be especially important for integrative processes needed to achieve global coherence during discourse processing.