Multiple Language Use Influences Oculomotor Task Performance: Neurophysiological Evidence of a Shared Substrate between Language and Motor Control

摘要: In the present electroencephalographical study, we asked to which extent executive control processes are shared by both language and motor domain. The rationale was examine whether whose efficiency is reinforced frequent use of a second can lead benefit in eye movements, i.e. non-linguistic activity. For this purpose, administrated 19 highly proficient late French-German bilingual participants group 20 French monolingual an antisaccade task, specific task involving control. automatic saccade has be suppressed while voluntary movement opposite direction carried out. Here, our main hypothesis that advantage should observed bilinguals if some properties between linguistic domains. ERP data revealed clear differences monolinguals. Critically, showed increased N2 effect size bilinguals, thought reflect better monitor conflict, combined with reduced sizes on markers reflecting inhibitory control, cue-locked positivity, target-locked P3 saccade-locked presaccadic positivity (PSP). Moreover, effective connectivity analyses (dynamic causal modelling; DCM) neuronal source level indicated rely more strongly ACC-driven monolinguals PFC-driven Taken together, findings may dynamic interplay strengthened conflict monitoring, associated subsequently efficient inhibition bilinguals. Finally, L2 proficiency immersion experience constitute relevant factors background predict inhibition. To conclude, study provided evidence for domain-general involvement handling multiple use, leading bilingualism.