Basic Linguistic Composition Recruits the Left Anterior Temporal Lobe and Left Angular Gyrus During Both Listening and Reading
Basic Linguistic Composition Recruits the Left Anterior Temporal Lobe and Left Angular Gyrus During Both Listening and Reading
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DOI：
10.1093/cercor/bhs170
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发表时间：
2013-08-01
期刊：
影响因子：
3.7
通讯作者：
Pylkkaenen, L.
中科院分区：
文献类型：
--
作者：
Bemis, D. K.;Pylkkaenen, L.
语言的体验主要通过两种媒介中的一种，即口语和书面文本。这两种语言载体虽然在形式上有本质上的差异，但具有相似的表达能力。因此，语言认知神经科学的一个目标是确定从感觉刺激到最终理解的神经路径上，这两种处理流在哪里汇合。在本研究中，我们探讨了基本组合运算在阅读和听力中的关系。使用脑磁图，我们测量了在两种模式下使用相同的语言材料和任务理解简单形容词短语（红船）所引起的神经活动。目前的研究范式偏离了以往的跨情态研究，只研究了简单形容词短语结构所引起的基本组合机制。我们的研究结果表明，在这种处理过程中，这两种方式都依赖于位于左前颞叶（lATL）和左角回（lAG）的共享神经机制。此外，我们发现这些区域所服务的组合机制在每个模态中以相同的时间顺序部署，lATL活动先于lAG活动。在最初的知觉加工过程中发现了特定形态的组合效应，表明在基本构成过程中也存在自上而下的低水平机制调节。
Language is experienced primarily through one of two mediumsuspoken words and written text. Although substantially different in form, these two linguistic vehicles possess similar powers of expression. Consequently, one goal for the cognitive neuroscience of language is to determine where, if anywhere, along the neural path from sensory stimulation to ultimate comprehension these two processing streams converge. In the present study, we investigate the relationship between basic combinatorial operations in both reading and listening. Using magnetoencephalography, we measured neural activity elicited by the comprehension of simple adjectivenoun phrases (red boat) using the same linguistic materials and tasks in both modalities. The present paradigm deviates from previous cross-modality studies by investigating only basic combinatorial mechanismsuspecifically, those evoked by the construction of simple adjectivenoun phrases. Our results indicate that both modalities rely upon shared neural mechanisms localized to the left anterior temporal lobe (lATL) and left angular gyrus (lAG) during such processing. Furthermore, we found that combinatorial mechanisms subserved by these regions are deployed in the same temporal order within each modality, with lATL activity preceding lAG activity. Modality-specific combinatorial effects were identified during initial perceptual processing, suggesting top-down modulation of low-level mechanisms even during basic composition.