Hierarchical artificial grammar processing engages Broca's area
Hierarchical artificial grammar processing engages Broca's area
复制标题
DOI：
10.1016/j.neuroimage.2008.04.249
复制
发表时间：
2008-08-15
期刊：
影响因子：
5.7
通讯作者：
Friederici, Angela D.
中科院分区：
文献类型：
--
作者：
Bahlmann, Joerg;Schubotz, Ricarda I.;Friederici, Angela D.
目前的功能磁共振成像研究层次处理的神经基础，使用两种类型的人工语法：一个由相邻的依赖关系的规则和层次依赖关系的规则。相邻的依存序列遵循规则（AB）（n），在该规则下，产生两种类型的音节类别之间的简单转换（例如，A（1）B（1）A（2）B（2））。音节的层次结构。遵循规则A（n）B（n），生成中心嵌入结构（例如A（2）A（1）B（1）B（2）），学习该结构需要处理分层依赖关系。当比较处理的层次依赖相邻的依赖关系，显着较高的激活，观察到在布罗卡区和相邻的边缘的腹侧运动前皮质（BA 44/6），除了一些其他几个皮质和皮质下区域。这些结果表明，布罗卡区是神经回路的一部分，负责处理人工语法中的层次结构。(C)2008年爱思唯尔公司All rights reserved.
The present fMRI study investigates the neural basis of hierarchical processing using two types of artificial grammars: one governed by rules of adjacent dependencies and the other by rules of hierarchical dependencies. The adjacent dependency sequences followed the rule (AB)(n), at which simple transitions between two types of syllable categories were generated (e.g. A(1)B(1)A(2)B(2)). The hierarchical syllable sequences. followed the rule A(n)B(n), generating a center-embedded structure (e.g. A(2)A(1)B(1)B(2)) the learning of which required the processing of hierarchical dependencies. When comparing the processing of hierarchical dependencies to adjacent dependencies, significantly higher activations were observed in Broca's area and the adjacent rim of the ventral premotor cortex (BA 44/6) in addition to some several other cortical and subcortical regions. These results indicate that Broca's area is part of a neural circuit that is responsible for the Processing of hierarchical structures in an artificial grammar. (C) 2008 Elsevier Inc. All rights reserved.