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Cathodal transcranial direct current stimulation over right dorsolateral prefrontal cortex improves language control during language switching.
Behav Brain Res. 2018 10 01; 351:34-41.BB

Abstract

Currently, there is increasing attention on how to best improve language control efficiency and minimize cross-language interference in bilinguals. Previous studies have demonstrated that right dorsolateral prefrontal cortex (rDLPFC) plays an important role in inhibiting unrelated stimuli. The current study applied transcranial direct current stimulation (tDCS) during language switching to determine whether modulation of rDLPFC would affect language control mechanisms. All the participants have undergone three types of stimulations: cathodal stimulation, anodal stimulation and sham stimulation. The sequence of three stimulations was counterbalanced across participants. After each stimulation, participants performed picture naming task for language switching. Unbalanced bilinguals exhibited a larger late positive component (LPC) in switching to the weaker language than to the dominant one and similar L1 and L2 switch costs only in the cathodal tDCS (C-tDCS) session. Further analyses showed that the differences of switch costs (L1 switch costs - L2 switch costs) in the C-tDCS session were smaller than in the sham-tDCS (S-tDCS) session. Results were largely consistent with the assumption that cathodal stimulation improving inhibitory control abilities of unbalanced bilinguals to help them better inhibit interference. Another possibility is that cathodal stimulation also worked in other brain areas (e.g., supplementary motor area), which potentially altered unbalanced bilinguals' speech planning or abilities to encode task sets.

Authors+Show Affiliations

Research Center of Brain and Cognitive Neuroscience, Liaoning Normal University, Dalian, 116029, China.Research Center of Brain and Cognitive Neuroscience, Liaoning Normal University, Dalian, 116029, China; Beijing Key Laboratory of Applied Experimental Psychology, Faculty of Psychology, Beijing Normal University, Beijing, 100875, China. Electronic address: abcde69503@126.com.Centre for French and Linguistics & Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C 1A4, Canada.Research Center of Brain and Cognitive Neuroscience, Liaoning Normal University, Dalian, 116029, China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

29842915

Citation

Li, Baike, et al. "Cathodal Transcranial Direct Current Stimulation Over Right Dorsolateral Prefrontal Cortex Improves Language Control During Language Switching." Behavioural Brain Research, vol. 351, 2018, pp. 34-41.
Li B, Liu H, Pérez A, et al. Cathodal transcranial direct current stimulation over right dorsolateral prefrontal cortex improves language control during language switching. Behav Brain Res. 2018;351:34-41.
Li, B., Liu, H., Pérez, A., & Xie, N. (2018). Cathodal transcranial direct current stimulation over right dorsolateral prefrontal cortex improves language control during language switching. Behavioural Brain Research, 351, 34-41. https://doi.org/10.1016/j.bbr.2018.05.026
Li B, et al. Cathodal Transcranial Direct Current Stimulation Over Right Dorsolateral Prefrontal Cortex Improves Language Control During Language Switching. Behav Brain Res. 2018 10 1;351:34-41. PubMed PMID: 29842915.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cathodal transcranial direct current stimulation over right dorsolateral prefrontal cortex improves language control during language switching. AU - Li,Baike, AU - Liu,Huanhuan, AU - Pérez,Alejandro, AU - Xie,Ning, Y1 - 2018/05/26/ PY - 2018/02/06/received PY - 2018/05/25/revised PY - 2018/05/25/accepted PY - 2018/5/31/pubmed PY - 2018/12/19/medline PY - 2018/5/30/entrez KW - Language control KW - Language switching KW - Late positive component KW - Transcranial direct current stimulation SP - 34 EP - 41 JF - Behavioural brain research JO - Behav Brain Res VL - 351 N2 - Currently, there is increasing attention on how to best improve language control efficiency and minimize cross-language interference in bilinguals. Previous studies have demonstrated that right dorsolateral prefrontal cortex (rDLPFC) plays an important role in inhibiting unrelated stimuli. The current study applied transcranial direct current stimulation (tDCS) during language switching to determine whether modulation of rDLPFC would affect language control mechanisms. All the participants have undergone three types of stimulations: cathodal stimulation, anodal stimulation and sham stimulation. The sequence of three stimulations was counterbalanced across participants. After each stimulation, participants performed picture naming task for language switching. Unbalanced bilinguals exhibited a larger late positive component (LPC) in switching to the weaker language than to the dominant one and similar L1 and L2 switch costs only in the cathodal tDCS (C-tDCS) session. Further analyses showed that the differences of switch costs (L1 switch costs - L2 switch costs) in the C-tDCS session were smaller than in the sham-tDCS (S-tDCS) session. Results were largely consistent with the assumption that cathodal stimulation improving inhibitory control abilities of unbalanced bilinguals to help them better inhibit interference. Another possibility is that cathodal stimulation also worked in other brain areas (e.g., supplementary motor area), which potentially altered unbalanced bilinguals' speech planning or abilities to encode task sets. SN - 1872-7549 UR - https://www.unboundmedicine.com/medline/citation/29842915/Cathodal_transcranial_direct_current_stimulation_over_right_dorsolateral_prefrontal_cortex_improves_language_control_during_language_switching_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0166-4328(18)30209-2 DB - PRIME DP - Unbound Medicine ER -