Activation changes of the left inferior frontal gyrus for the factors of construction and scrambling in a sentence

Kyohei Tanaka, Shinri Ohta, Ryuta Kinno, Kuniyoshi L Sakai

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Our previous functional magnetic resonance imaging (fMRI) studies have indicated that the left dorsal inferior frontal gyrus (L. dF3op/F3t) and left lateral premotor cortex (L. LPMC) are crucial regions for syntactic processing among the syntax-related networks. In the present study, we further examined how activations in these regions were modified by the factors of construction and scrambling (object-initial type). Using various sentence types, we clarified three major points. First, we found that the main effects of construction and scrambling consistently activated the L. dF3op/F3t and L. LPMC. Secondly, the main effects of scrambling clearly localized activation in the L. dF3op/F3t and L. LPMC, indicating the more narrowed down processing of syntax. Thirdly, step-wise percent signal changes were observed in the L. dF3op/F3t, demonstrating synergistic effects of construction and scrambling. These results demonstrate the abstract and intensive nature of syntactic processing carried out by these regions, i.e., the grammar center.

Original languageEnglish
Pages (from-to)511-522
Number of pages12
JournalProceedings of the Japan Academy Series B: Physical and Biological Sciences
Volume93
Issue number7
DOIs
Publication statusPublished - Aug 2 2017

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