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Lasting Enhancements in Neural Efficiency by Multi-Session Transcranial Direct Current Stimulation during Working Memory Training
- Source :
-
npj Science of Learning . 2023 8. - Publication Year :
- 2023
-
Abstract
- The neural basis for long-term behavioral improvements resulting from multi-session transcranial direct current stimulation (tDCS) combined with working memory training (WMT) remains unclear. In this study, we used task-related electroencephalography (EEG) measures to investigate the lasting neurophysiological effects of anodal high-definition (HD)-tDCS applied over the left dorsolateral prefrontal cortex (dlPFC) during a challenging WMT. Thirty-four healthy young adults were randomized to sham or active tDCS groups and underwent ten 30-minute training sessions over ten consecutive days, preceded by a pre-test and followed by post-tests performed one day and three weeks after the last session, respectively, by performing high-load WM tasks along with EEG recording. Multi-session HD-tDCS significantly enhanced the behavioral benefits of WMT. Compared to the sham group, the active group showed facilitated increases in theta, alpha, beta, and gamma task-related oscillations at the end of training and significantly increased P300 response 3 weeks post-training. Our findings suggest that applying anodal tDCS over the left dlPFC during multi-session WMT can enhance the behavioral benefits of WMT and facilitate sustained improvements in WM-related neural efficiency.
Details
- Language :
- English
- ISSN :
- 2056-7936
- Volume :
- 8
- Database :
- ERIC
- Journal :
- npj Science of Learning
- Publication Type :
- Academic Journal
- Accession number :
- EJ1431702
- Document Type :
- Journal Articles<br />Reports - Research
- Full Text :
- https://doi.org/10.1038/s41539-023-00200-y