The Effect of Presentation Paradigm on Syntactic Processing: An Event-Related fMRI Study
The Effect of Presentation Paradigm on Syntactic Processing: An Event-Related fMRI Study
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DOI：
10.1002/hbm.20845
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发表时间：
2010-01-01
影响因子：
4.8
通讯作者：
Newman, Sharlene D.
中科院分区：
文献类型：
--
作者：
Lee, Donghoon;Newman, Sharlene D.
采用事件相关fMRI研究方法，探讨了两种不同的句子呈现范式--快速序列视觉呈现（RSVP）和整句呈现对句法加工的影响。在扫描过程中，句子呈现使用两个演示范式之一，并随后进行了短暂的延迟和探测，以验证句子的理解。包括延迟是为了将穿刺相关活动与穿刺针相关活动分开。的行为数据表明，句法复杂性的反应时间和准确性的主要影响，准确性揭示了复杂性和演示范式之间的相互作用RSVP产生更多的错误，句法复杂的句子比整句演示。成像数据显示，句法复杂性的影响，在句子阶段在左BA 44和左BA 44和左后MTG在探测阶段。此外，时程分析还发现，这两个脑区的复杂性与呈现范式之间存在交互作用，即在RSVP任务中不存在复杂性效应，但在整句呈现任务中存在显著的复杂性效应。除了发现这两种呈现范式对句法处理的影响不同之外，视觉通路（V1/V2 vs. V5）和海马内的主要影响揭示了范式之间激活的显著差异。《脑地图》31：65-79，2010年。(C)2009 Wiley-Liss，Inc.
An event-related fMRI study was conducted to investigate the effect of two different sentence presentation paradigms-rapid serial visual presentation (RSVP) and whole sentence presentation-on syntactic processing. During scanning, sentences were presented using one of the two presentation paradigms and were followed by a short delay and a probe to verify sentence comprehension. The delay was included in an attempt to separate sentence-related activity from probe-related activity. The behavioral data showed a main effect of syntactic complexity for reaction time and accuracy, and accuracy revealed an interaction between complexity and the presentation paradigm employed-RSVP produced many more errors for syntactically complex sentences than did whole sentence presentation. The imaging data revealed a syntactic complexity effect during the sentence phase in left BA 44 and during the probe phase in left BA 44 and the left posterior MTG. In addition, time-course analysis revealed that these two regions also showed an interaction between complexity and presentation paradigm such that there was no complexity effect during RSVP but a significant effect during whole sentence presentation. In addition to finding that these two presentation paradigms differentially affected syntactic processing, there were main effects within the visual pathway (V1/V2 vs. V5) and the hippocampus that revealed significant differences in activation between the paradigms. Hum Brain Mapp 31:65-79, 2010. (C) 2009 Wiley-Liss, Inc.