Effect of Improving Executive Function in Male Soldiers with Repetitive High-definition Transcranial Direct Current Stimula-tion on the Right Inferior Frontal Gyrus
ZHENG Wei
TAO Yin
ZHANG Yanwen
ZHANG Shuqin
HE Yang
GUO Qingjun
CHEN Qiong
SONG Jian
XU Tao
Abstract：Objective To investigate the effects of repetitive high-definition transcranial direct current stimulation(HD-tDCS)of the right inferior frontal gyrus(IFG)on 3 core sub-components(working memory,inhibition,cognitive flexibility)of executive function in healthy adults.Methods A total of 70 young male soldiers from an Air Force academy from July 2023 to December 2023 were enrolled,they were divided into the stimulation group(n=36)and the control group(n=34)by random number table method.The stimulation group received HD-tDCS intervention to stimulate IFG,the stimulation intensity was set to 2 mA,and the single session was 20 min;the control group received sham stimulation mode to stimulate IFG,the rapid elevation of current occurred only in the 30 s at the beginning and end of the stimulus phase,when 2 mA was reached,it rapidly decreased to 0 mA.The two groups were stimulated once a day for a total of 7 times.The 2-back task,color-word Stroop task and number switching task were used to evaluate the working memory,inhibition and cognitive flexibility of military personnel before and after intervention.Results Compared with the control group,the Stroop effect and switching cost of the stimulation group were significantly reduced(all P＜0.05),while the variation of accuracy rate and reaction time of 2-back task were not significant(all P＞0.05).Conclusion Repetitive HD-tDCS on the right IFG can effectively improve the executive function such as inhibition and cognitive flexibility of military personnel,which provides inspiration and a new perspective for repetitive non-invasive electrical stimulation to alleviate the executive function impairment of clinical patients and formulate targeted intervention plans.
Keywords：Transcranial direct current stimulationRight inferior frontal gyrusExecutvie functionInhibitionWorking memoryCognitive flexibility
Publication Date：2025-02-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 155-158 )