作者: Emiliano Zaccarella , Lars Meyer , Michiru Makuuchi , Angela D. Friederici
关键词: Brain mapping 、 Brodmann area 、 Merge (linguistics) 、 Linguistics 、 Verb 、 Broca's area 、 Syntax 、 Speech perception 、 Computer science 、 Functional magnetic resonance imaging
摘要: Language comes in utterances which words are bound together according to a simple rule-based syntactic computation (merge), creates linguistic hierarchies of potentially infinite length-phrases and sentences. In the current functional magnetic resonance imaging study, we compared prepositional phrases sentences-both involving merge-to word lists-not explore how this process is implemented brain. We found that merge activates pars opercularis left inferior frontal gyrus (IFG; Brodmann Area [BA] 44) smaller region posterior superior temporal sulcus (pSTS). Within IFG, sentences engaged more anterior portion area (pars triangularis, BA 45)-compared with phrases-which showed activity peak 44. As phrases, contrast sentences, do not contain verbs, 44 may reflect structure-building processing, while involvement 45 encoding propositional meaning initiated by verb. The pSTS appears work IFG during thematic role assignment only at sentential level, but also phrasal level. present results suggest merge, binding into hierarchies, primarily supported IFG.