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The brain differentiates human and non-human grammars: Functional localization and structural connectivity

机译:大脑区分人类和非人类语法:功能定位和结构连接

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摘要

The human language faculty has been claimed to be grounded in the ability to process hierarchically structured sequences. This human ability goes beyond the capacity to process sequences with simple transitional probabilities of adjacent elements observable in non-human primates. Here we show that the processing of these two sequence types is supported by different areas in the human brain. Processing of local transitions is subserved by the left frontal operculum, a region that is phylogenetically older than Broca’s area, which specifically holds responsible the computation of hierarchical dependencies. Tractography data revealing differential structural connectivity signatures for these two brain areas provide additional evidence for a segregation of two areas in the left inferior frontal cortex.
机译:据称人类语言系基于处理层次结构化序列的能力。这种人类能力超出了处理序列的能力,这些序列具有在非人类灵长类动物中可观察到的相邻元素的简单过渡概率。在这里,我们显示人脑中不同区域支持这两种序列类型的处理。局部额叶的处理由左额覆盖,该额叶在系统发育上早于Broca区域,该区域专门负责层次依赖性的计算。揭示了这两个大脑区域的不同结构连通性特征的断层扫描数据为左下额叶皮层中两个区域的分离提供了额外的证据。

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