University of Florida, Department of Linguistics, Gainesville, FL 32611, USA; UiT The Arctic University of Norway, Department of Language and Culture, 9037 Tromsø, Norway.
University of Florida, Department of Linguistics, Gainesville, FL 32611, USA.
Brain Lang. 2022 Aug;231:105139. doi: 10.1016/j.bandl.2022.105139. Epub 2022 Jun 7.
Code-switching, i.e. the alternation between languages in a conversation, is a typical, yet socially-constrained practice in bilingual communities. For instance, code-switching is permissible only when other conversation partners are fluent in both languages. Studying code-switching provides insight in the cognitive and neural mechanisms underlying language control, and their modulation by linguistic and non-linguistic factors. Using time-frequency representations, we analyzed brain oscillation changes in EEG data recorded in a prior study (Kaan et al., 2020). In this study, Spanish-English bilinguals read sentences with and without switches in the presence of a bilingual or monolingual partner. Consistent with prior studies, code-switches were associated with a power decrease in the lower beta band (15-18 Hz). In addition, code-switches were associated with a power decrease in the upper gamma band (40-50 Hz), but only when a bilingual partner was present, suggesting the semantic/pragmatic processing of code-switches differs depending on who is present.
语码转换，即在会话中交替使用两种语言，是双语社区中一种典型但受社会限制的语言使用现象。例如，只有当其他会话伙伴都能流利地使用两种语言时，语码转换才被允许。研究语码转换可以深入了解语言控制的认知和神经机制，以及语言和非语言因素对其的调节。我们使用时频表示法，分析了先前一项研究（Kaan 等人，2020 年）中记录的 EEG 数据中的脑振荡变化。在这项研究中，西班牙语-英语双语者在双语或单语伙伴在场的情况下阅读带有和不带有转换的句子。与先前的研究一致，语码转换与较低的β频段（15-18 Hz）的功率下降有关。此外，语码转换与上γ频段（40-50 Hz）的功率下降有关，但仅当存在双语伙伴时才会出现这种情况，这表明语码转换的语义/语用处理取决于在场的人。
