Modulation of Repeated Anodal HD-tDCS on Attention in Healthy Young Adults

Frontiers in Psychology

article

Hongliang Lu¹  Quanhui Liu¹  Zhihua Guo¹  Guangxin Zhou²  Yajuan Zhang¹  Xia Zhu¹  Shengjun Wu¹ 

[1] Department of Military Medical Psychology, Air Force Military Medical University;School of Basic Medical Sciences, Air Force Military Medical University

关键词: transcranial direct current stimulation;    HD-tDCS;    attention;    attention network;    executive control;    attention network test;    stroop;   

DOI  :  10.3389/fpsyg.2020.564447

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

High-definition transcranial direct current stimulation (HD-tDCS) is a valid brain stimulation technology to optimize cognitive function. Recent evidence indicates that single anodal tDCS session enhances attention; however, the variation in attention produced by repeated anodal HD-tDCS over a longer period of time has not been explored. We examined the modulation of attention function in healthy young participants (39 young adults) who received repeated HD-tDCS sustained for 4 weeks. The results showed a robust benefit of anodal HD-tDCS on executive control and psychomotor efficiency, but not on orienting, alerting, or selective attention (inhibition); the benefit increased successively over 4 weeks; and the enhancement on executive control of each week was significant compared to baseline in the anodal group. In addition, the subjects’ performances on the test of executive control and psychomotor efficiency gradually restored to the initial level in the sham group, which appeared obviously from week 3 (after 9 interventions), but the improvement of attention in the anodal group was persistent. We conclude that repeated anodal HD-tDCS provides a positive benefit on executive control and psychomotor efficiency and has obvious accumulative effect after 9 or more times intervention compared to sham HD-tDCS. Additionally, our findings might provide pivotal guidance for the formulation of a strategy for the use of repeated anodal HD-tDCS to modulate on attention function.

【 授权许可】

CC BY