The Bilingual Lexicon, Back and Forth: Electrophysiological Signatures of Translation Asymmetry

Área de publicación Neurociencia Cognitiva
Tipo de publicación Articles
Lugar de publicación Neuroscience
Fecha de publicación 2022
Autores Agustín Ibañez - Adolfo García - Agustina Birba - Pérez, G., Hesse, E., Dottori, M., Amoruso, L., Martorell Caro, M.

Here, 27 proficient Spanish-English bilinguals engaged in FT and BT of single words as we obtained high-density EEG recordings to perform cluster-based oscillatory and non-linear functional connectivity analyses. Relative to BT, FT yielded slower responses, higher frontal theta (4-7 Hz) power in an early window (0-300 ms), reduced centro-posterior lower-beta (14-20 Hz) and centro-frontal upper-beta (21-30 Hz) power in a later window (300-600 ms), and lower fronto-parietal connectivity below 10 Hz in the early window. Also, the greater the behavioral difference between FT and BT, the greater the power of the early theta cluster for FT over BT. These results reveal key (de)coupling dynamics underlying translation asymmetry, offering frequency-specific constraints for leading models of bilingual lexical processing.

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