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Effects of transcranial direct current stimulation (tDCS) on multiscale complexity of dual-task postural control in older adults
Zhou, Diange1,2; Zhou, Junhong2; Chen, Hu3; Manor, Brad4,5,6; Lin, Jianhao1; Zhang, Jue2
关键词Postural control Dual task tDCS Elderly Multiscale entropy
刊名EXPERIMENTAL BRAIN RESEARCH
2015-08-01
DOI10.1007/s00221-015-4310-0
233期:8页:2401-2409
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Neurosciences
研究领域[WOS]Neurosciences & Neurology
关键词[WOS]PREFRONTAL CORTEX ; ENTROPY ANALYSIS ; HEART-RATE ; PHYSIOLOGICAL COMPLEXITY ; APPROXIMATE ENTROPY ; BRAIN-STIMULATION ; WORKING-MEMORY ; DYNAMICS ; PERFORMANCE ; ATTENTION
英文摘要

Transcranial direct current stimulation (tDCS) targeting the prefrontal cortex reduces the size and speed of standing postural sway in younger adults, particularly when performing a cognitive dual task. Here, we hypothesized that tDCS would alter the complex dynamics of postural sway as quantified by multiscale entropy (MSE). Twenty healthy older adults completed two study visits. Center-of-pressure (COP) fluctuations were recorded during single-task (i.e., quiet standing) and dual-task (i.e., standing while performing serial subtractions) conditions, both before and after a 20-min session of real or sham tDCS. MSE was used to estimate COP complexity within each condition. The percentage change in complexity from single- to dual-task conditions (i.e., dual-task cost) was also calculated. Before tDCS, COP complexity was lower (p = 0.04) in the dual-task condition as compared to the single-task condition. Neither real nor sham tDCS altered complexity in the single-task condition. As compared to sham tDCS, real tDCS increased complexity in the dual-task condition (p = 0.02) and induced a trend toward improved serial subtraction performance (p = 0.09). Moreover, those subjects with lower dual-task COP complexity at baseline exhibited greater percentage increases in complexity following real tDCS (R = -0.39, p = 0.05). Real tDCS also reduced the dual-task cost to complexity (p = 0.02), while sham stimulation had no effect. A single session of tDCS targeting the prefrontal cortex increased standing postural sway complexity with concurrent non-postural cognitive task. This form of noninvasive brain stimulation may be a safe strategy to acutely improve postural control by enhancing the system′s capacity to adapt to stressors.

语种英语
WOS记录号WOS:000358322500016
项目编号11372013 ; 1K01AG044543-01A1
资助机构National Natural Science Foundation of China ; National Institute on Aging
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/59656
专题北京大学第二临床医学院
北京大学口腔医学院_卫生部口腔医学计算机应用工程技术研究中心
作者单位1.Peking Univ, Peoples Hosp, Arthrit Clin & Res Ctr, Beijing 10044, Peoples R China
2.Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China
3.Peking Univ, Off Educ Adm, Beijing 100871, Peoples R China
4.Hebrew SeniorLife, Inst Aging Res, Roslindale, MA USA
5.Beth Israel Deaconess Med Ctr, Dept Med, Boston, MA 02215 USA
6.Harvard Univ, Sch Med, Boston, MA USA
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GB/T 7714
Zhou, Diange,Zhou, Junhong,Chen, Hu,et al. Effects of transcranial direct current stimulation (tDCS) on multiscale complexity of dual-task postural control in older adults[J]. EXPERIMENTAL BRAIN RESEARCH,2015,233(8):2401-2409.
APA Zhou, Diange,Zhou, Junhong,Chen, Hu,Manor, Brad,Lin, Jianhao,&Zhang, Jue.(2015).Effects of transcranial direct current stimulation (tDCS) on multiscale complexity of dual-task postural control in older adults.EXPERIMENTAL BRAIN RESEARCH,233(8),2401-2409.
MLA Zhou, Diange,et al."Effects of transcranial direct current stimulation (tDCS) on multiscale complexity of dual-task postural control in older adults".EXPERIMENTAL BRAIN RESEARCH 233.8(2015):2401-2409.
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