名词和动词生成的皮质特征。
Cortical signatures of noun and verb production.
作者信息
Shapiro Kevin A, Moo Lauren R, Caramazza Alfonso
机构信息
Department of Psychology, Harvard University, 33 Kirkand Street, Cambridge, MA 02138, USA.
出版信息
Proc Natl Acad Sci U S A. 2006 Jan 31;103(5):1644-9. doi: 10.1073/pnas.0504142103. Epub 2006 Jan 23.
Categories like "noun" and "verb" represent the basic units of grammar in all human languages, and the retrieval of categorical information associated with words is an essential step in the production of grammatical speech. Studies of brain-damaged patients suggest that knowledge of nouns and verbs can be spared or impaired selectively; however, the neuroanatomical correlates of this dissociation are not well understood. We used event-related functional MRI to identify cortical regions that were active when English-speaking subjects produced nouns or verbs in the context of short phrases. Two regions, in the left prefrontal cortex and left superior parietal lobule, were selectively activated for verb trials compared with noun trials; one region in the left inferior temporal lobe was more active during noun production than verb production. We propose that these regions are involved in representing core conceptual properties of nouns and verbs.
诸如“名词”和“动词”之类的类别代表了所有人类语言中的基本语法单位，而与单词相关的类别信息检索是产生符合语法的言语的关键步骤。对脑损伤患者的研究表明，名词和动词的知识可能会有选择性地保留或受损；然而，这种分离的神经解剖学关联尚未得到很好的理解。我们使用事件相关功能磁共振成像来识别说英语的受试者在短短语语境中生成名词或动词时活跃的皮层区域。与名词试验相比，左前额叶皮层和左上顶叶小叶中的两个区域在动词试验中被选择性激活；左颞下回中的一个区域在名词生成过程中比动词生成过程中更活跃。我们认为这些区域参与了名词和动词核心概念属性的表征。
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