Neural bases of language switching in high and early proficient bilinguals  

Oleh:

Garbin, G. ; Costa, A. ; Sanjuan, A. ; Forn, C. ; Rodriguez-Pujadas, A. ; Ventura, N. ; Belloch, V. ; Hernandez, M. ; Ávila, C.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 119 no. 3 (2011), page 129-135.
Topik: Bilingualism; Basal ganglia; Picture naming; Language switching; Pre-SMA
Fulltext: 119_03_Garbin.pdf (339.26KB)

Isi artikel

The left inferior frontal cortex, the caudate and the anterior cingulate have been proposed as the neural origin of language switching, but most of the studies were conducted in low proficient bilinguals. In the present study, we investigated brain areas involved in language switching in a sample of 19 early, highproficient Spanish–Catalan bilinguals using a picture naming task that allowed contrasting switch and non-switch trials. Compared to the non-switching condition, language switching elicited greater activation in the head of the left caudate and the pre-SMA/ACC. When the direction of the switching was considered, the left caudate was more associated with forward switching and the pre-SMA/ACC with backward switching. The discussion is focused on the relevance of these brain structures in language control in early, high-proficient bilinguals, and the comparison with previous results in late bilinguals.

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