Sentence processing selectivity in Broca's area: evident for structure but not syntactic movement.

Sentence processing selectivity in Broca's area: evident for structure but not syntactic movement.
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布罗卡区的句子处理选择性:结构明显,但句法运动不明显。

DOI:
10.1080/23273798.2015.1066831
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发表时间:
2015
期刊:
Language, cognition and neuroscience
影响因子:
--
通讯作者:
Hickok,Gregory
Hickok,Gregory
中科院分区:
--
文献类型:
--
作者:
Rogalsky,Corianne;Almeida,Diogo;Sprouse,Jon;Hickok,Gregory

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布罗卡区在句子加工中的作用一直备受争议。假设包括布罗卡区支持句子理解通过句法特定的过程,层次结构的建设,或工作记忆。在这里,我们采用一个主题内的功能磁共振成像(fMRI)的方法,使用双水平对比和非重复比较任务来解决这些假设。标准的句法运动距离的影响被复制,但没有发现差异之间的运动和非运动句子在布罗卡区的组或一贯在个别主题的分析。组和个人的结果都确定Broca的区域次区域是选择性的句子结构。组,而不是个人的主题结果,建议共享资源的句子处理和发音在布罗卡区。我们的结论是,布罗卡区是没有选择性地处理句法运动,但该次区域选择性地响应句子结构。我们的研究结果加强了Fedorenko和Kanwishser对Broca区个体受试者分析的呼吁,因为群体研究结果可能会掩盖选择性反应。
The role of Broca’s area in sentence processing is hotly debated. Hypotheses include that Broca’s area supports sentence comprehension via syntax-specific processes, hierarchical structure building, or working memory. Here we adopt a within-subject functional magnetic resonance imaging (fMRI) approach using sentence-level contrasts and non-sentential comparison tasks to address these hypotheses. Standard syntactic movement distance effects were replicated, but no difference was found between movement and non-movement sentences in Broca's area in the group or consistently in the individual subject analyses. Group and individual results both identify Broca's area subregions that are selective for sentence structure. Group, but not individual subject results, suggest shared resources for sentence processing and articulation in Broca's area. We conclude that Broca’s area is not selectively processing syntactic movement, but that subregions are selectively responsive to sentence structure. Our findings reinforce Fedorenko and Kanwishser's call for individual subject analyses in Broca's area, as group findings can obscure selective responses.
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