Effects of frontoparietal transcranial alternating current stimulation on working memory in different pos-tures
10.3969/j.issn.1001-1242.2024.07.008
- VernacularTitle:额顶叶经颅交流电刺激对不同姿势下工作记忆的干预效果
- Author:
Yufeng ZHANG
1
;
Yanwen XIAO
;
Lingyan HUANG
Author Information
1. 上海体育大学"运动健身科技"省部共建教育部重点实验室,上海市,200438;上海体育大学运动健康学院
- Keywords:
working memory;
transcranial alternating current stimulation;
healthy adults
- From:
Chinese Journal of Rehabilitation Medicine
2024;39(7):965-970
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of theta-transcranial alternating current stimulation(θ-tACS)over the frontal-parietal cortex on working memory(WM)performance under different postural conditions(sitting and stand-ing)in healthy adults. Method:The study was a randomized,crossover,double-blind design.Sixteen healthy adults received tACS or sham stimulation in random order,with at least 72 hours interval between two sessions.Seven electrodes were placed in the left frontoparietal critical brain region with 6Hz for 21 mins.The sham stimulation used the same stimulation time and frequency as tACS group,but only 1 minute of stimulation(30s at the beginning and 30s at the end of the stimulation).WM performance was assessed before and immediately after stimulation,in-cluding accuracy,reaction time and inverse efficiency scores.Wilcoxon rank sum tests were used to observe between-and within-group differences on WM performance. Result:Fifteen participants completed the experiment and there were no significant differences in side effects be-tween two groups.There was a significant improvement in reaction time and inverse efficiency scores for sit-ting WM as well as reaction time for standing WM after the frontoparietal θ-tACS(P＜0.05).There was a trend towards improvement in inverse efficiency scores for standing WM(P=0.057),while there was no signif-icant difference in accuracy,reaction time and inverse efficiency scores of WM during the sitting and standing conditions in the sham stimulation(all P＞0.05). Conclusion:Frontoparietal θ-tACS can improve WM performance in both sitting and standing postures.This helps healthy adults cope with real-life multitasking cognitive activities and has important practical application value.
