Effects of theta burst stimulation over the dorsolateral prefrontal cortex on language switching - A behavioral and ERP study.
Brain Lang
; 205: 104775, 2020 06.
Article
em En
| MEDLINE
| ID: mdl-32163743
ABSTRACT
This study investigated the role of the left dorsolateral prefrontal cortex (DLPFC) in language switching using theta burst stimulation (TBS) and electroencephalography in late bilinguals. After a sham-controlled baseline, participants received either excitatory or inhibitory TBS over the left DLPFC before conducting picture naming tasks in pure language blocks and a language switching block, as well as a nonverbal switching task. On the behavioral level, we found no effect of TBS. However, the ERP-analysis revealed an effect of Stimulation for the picture naming tasks, characterized by alterations in the left DLPFC at 20-72 ms, and in networks associated with conflict resolution and self-monitoring at 533-600 ms. As we did not find an interaction between Stimulation and Block (switching vs non-switching), prefrontal stimulation did not specifically modulate interlanguage control. The left DLPFC might rather be involved in enhancingmaintenance of task demands and self-monitoring during language production in both mono- and bilingual contexts.
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MEDLINE
Assunto principal:
Desempenho Psicomotor
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Ritmo Teta
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Córtex Pré-Frontal
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Multilinguismo
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Estimulação Magnética Transcraniana
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Potenciais Evocados
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article