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Identifying bilingual semantic neural representations across languages
Oleh:
Buchweitz, Augusto
;
Shinkareva, Svetlana V.
;
Mason, Robert A.
;
Mitchell, Tom M.
;
Just, Marcel Adam
Jenis:
Article from Journal - ilmiah internasional
Dalam koleksi:
Brain and Language (Full Text) vol. 120 no. 3 (2012)
,
page 282-289.
Topik:
fMRI
;
Bilingualism
;
Pattern-based classification
Fulltext:
120_03_Buchweitz.pdf
(601.18KB)
Isi artikel
The goal of the study was to identify the neural representation of a noun’s meaning in one language based on the neural representation of that same noun in another language. Machine learning methods were used to train classifiers to identify which individual noun bilingual participants were thinking about in one language based solely on their brain activation in the other language. The study shows reliable (p < .05) pattern-based classification accuracies for the classification of brain activity for nouns across languages. It also shows that the stable voxels used to classify the brain activation were located in areas associated with encoding information about semantic dimensions of the words in the study. The identification of the semantic trace of individual nouns from the pattern of cortical activity demonstrates the existence of a multi-voxel pattern of activation across the cortex for a single noun common to both languages in bilinguals.
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