Cortical activation in the processing of passive sentences in L1 and L2: An fMRI study
| Autor: | Hideyuki Okamoto, Hyeonjeong Jeong, Ryuta Kawashima, Wataru Nakamura, Naho Ikuta, Satoru Yokoyama, Jungho Kim, Kazuki Iwata, Shinya Uchida, Kei Yoshimoto, Tadao Miyamoto, Kaoru Horie, Shigeru Sato, Yuko Sassa |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Male medicine.medical_specialty Brain activity and meditation Cognitive Neuroscience Superior parietal lobule Audiology Functional Laterality Psycholinguistics Reaction Time medicine Humans Grammatical construction Language Cerebral Cortex Communication medicine.diagnostic_test business.industry Magnetic Resonance Imaging Second-language acquisition Comprehension Reading Neurology Female Functional magnetic resonance imaging Psychology business Psychomotor Performance Sentence |
| Zdroj: | NeuroImage. 30:570-579 |
| ISSN: | 1053-8119 |
| DOI: | 10.1016/j.neuroimage.2005.09.066 |
| Popis: | The question of whether the bilingual brain processes a first and second language (L1 and L2, respectively) differently is a central issue in many psycholinguistic and neurolinguistic studies. This study used functional magnetic resonance imaging (fMRI) to investigate whether late bilinguals process structurally complex sentences in L1 and L2 in different cortical networks. For this purpose, we directly compared brain activity during the processing of active and passive sentences in both L1 and L2. We asked 36 healthy subjects to judge whether or not a presented sentence was semantically plausible. Both L1 and L2 activated the left hemispheric language-related regions such as the left inferior frontal, superior/middle temporal, and parietal cortices. However, we found different activation patterns between L1 and L2 in the processing of passive sentences. Passive sentences elicited greater activation than their active counterparts in the left pars triangularis, the premotor area, and the superior parietal lobule in Japanese, but not in English. Furthermore, there was a significant interaction between sentence type (active versus passive) and language (Japanese versus English) in the left pars orbitalis. The results of this study indicate that late bilinguals use similar cortical regions to comprehend both L1 and L2. However, when late bilinguals are presented with structurally complex sentences, the involvement of these regions differs between L1 and L2. These results suggest that, in addition to age of L2 acquisition and L2 proficiency, differences in grammatical construction affect cortical representation during the comprehension of L1 and L2. |
| Databáze: | OpenAIRE |
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