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The Effects of Transcranial Direct Current Stimulation (tDCS) on Working Memory Training in Healthy Young Adults.
Front Hum Neurosci 2019; 13:19FH

Abstract

Working memory (WM) is a fundamental cognitive ability to support complex thought, but it is limited in capacity. WM training has shown the potential benefit for those in need of a higher WM ability. Many studies have shown the potential of transcranial direct current stimulation (tDCS) to transiently enhance WM performance by delivering a low current to the brain cortex of interest, via electrodes on the scalp. tDCS has also been revealed as a promising intervention to augment WM training in a few studies. However, those few tDCS-paired WM training studies, focused more on the effect of tDCS on WM enhancement and its transferability after training and paid less attention to the variation of cognitive performance during the training procedure. The current study attempted to explore the effect of tDCS on the variation of performance, during WM training, in healthy young adults. All the participants received WM training with the load-adaptive verbal N-back task, for 5 days. During the training procedure, active/sham anodal high-definition tDCS (HD-tDCS) was used to stimulate the left dorsolateral prefrontal cortex (DLPFC). To examine the training effect, pre- and post-tests were performed, respectively, 1 day before and after the training sessions. At the beginning of each training session, stable-load WM tasks were performed, to examine the performance variation during training. Compared to the sham stimulation, higher learning rates of performance metrics during the training procedure were found when WM training was combined with active anodal HD-tDCS. The performance improvements (post-pre) of the active group, were also found to be higher than those of the sham group and were transferred to a similar untrained WM task. Further analysis revealed a negative relationship between the training improvements and the baseline performance. These findings show the potential that tDCS may be leveraged as an intervention to facilitate WM training, for those in need of a higher WM ability.

Authors+Show Affiliations

Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.Department of Biomedical Engineering, College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, China.Department of Biomedical Engineering, College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, China.Department of Biomedical Engineering, College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, China.Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China. Department of Biomedical Engineering, College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, China.Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China. Department of Biomedical Engineering, College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30774590

Citation

Ke, Yufeng, et al. "The Effects of Transcranial Direct Current Stimulation (tDCS) On Working Memory Training in Healthy Young Adults." Frontiers in Human Neuroscience, vol. 13, 2019, p. 19.
Ke Y, Wang N, Du J, et al. The Effects of Transcranial Direct Current Stimulation (tDCS) on Working Memory Training in Healthy Young Adults. Front Hum Neurosci. 2019;13:19.
Ke, Y., Wang, N., Du, J., Kong, L., Liu, S., Xu, M., ... Ming, D. (2019). The Effects of Transcranial Direct Current Stimulation (tDCS) on Working Memory Training in Healthy Young Adults. Frontiers in Human Neuroscience, 13, p. 19. doi:10.3389/fnhum.2019.00019.
Ke Y, et al. The Effects of Transcranial Direct Current Stimulation (tDCS) On Working Memory Training in Healthy Young Adults. Front Hum Neurosci. 2019;13:19. PubMed PMID: 30774590.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The Effects of Transcranial Direct Current Stimulation (tDCS) on Working Memory Training in Healthy Young Adults. AU - Ke,Yufeng, AU - Wang,Ningci, AU - Du,Jiale, AU - Kong,Linghan, AU - Liu,Shuang, AU - Xu,Minpeng, AU - An,Xingwei, AU - Ming,Dong, Y1 - 2019/02/01/ PY - 2018/08/28/received PY - 2019/01/17/accepted PY - 2019/2/19/entrez PY - 2019/2/19/pubmed PY - 2019/2/19/medline KW - cognitive enhancement KW - cognitive training KW - transcranial direct current stimulation (tDCS) KW - working memory KW - working memory training SP - 19 EP - 19 JF - Frontiers in human neuroscience JO - Front Hum Neurosci VL - 13 N2 - Working memory (WM) is a fundamental cognitive ability to support complex thought, but it is limited in capacity. WM training has shown the potential benefit for those in need of a higher WM ability. Many studies have shown the potential of transcranial direct current stimulation (tDCS) to transiently enhance WM performance by delivering a low current to the brain cortex of interest, via electrodes on the scalp. tDCS has also been revealed as a promising intervention to augment WM training in a few studies. However, those few tDCS-paired WM training studies, focused more on the effect of tDCS on WM enhancement and its transferability after training and paid less attention to the variation of cognitive performance during the training procedure. The current study attempted to explore the effect of tDCS on the variation of performance, during WM training, in healthy young adults. All the participants received WM training with the load-adaptive verbal N-back task, for 5 days. During the training procedure, active/sham anodal high-definition tDCS (HD-tDCS) was used to stimulate the left dorsolateral prefrontal cortex (DLPFC). To examine the training effect, pre- and post-tests were performed, respectively, 1 day before and after the training sessions. At the beginning of each training session, stable-load WM tasks were performed, to examine the performance variation during training. Compared to the sham stimulation, higher learning rates of performance metrics during the training procedure were found when WM training was combined with active anodal HD-tDCS. The performance improvements (post-pre) of the active group, were also found to be higher than those of the sham group and were transferred to a similar untrained WM task. Further analysis revealed a negative relationship between the training improvements and the baseline performance. These findings show the potential that tDCS may be leveraged as an intervention to facilitate WM training, for those in need of a higher WM ability. SN - 1662-5161 UR - https://www.unboundmedicine.com/medline/citation/30774590/The_Effects_of_Transcranial_Direct_Current_Stimulation__tDCS__on_Working_Memory_Training_in_Healthy_Young_Adults_ L2 - https://dx.doi.org/10.3389/fnhum.2019.00019 DB - PRIME DP - Unbound Medicine ER -