Anodal Transcranial Direct Current Stimulation Over the Supplementary Motor Area Improves Anticipatory Postural Adjustments in Older Adults.
Anodal Transcranial Direct Current Stimulation Over the Supplementary Motor Area Improves Anticipatory Postural Adjustments in Older Adults.
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DOI：
10.3389/fnhum.2018.00317
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发表时间：
2018
影响因子：
2.9
通讯作者：
Kirimoto H
中科院分区：
文献类型：
--
作者：
Nomura T;Kirimoto H
我们研究了阳极经颅直流电刺激（tDCS）对辅助运动区（SMA）对老年人预期姿势调整（APA）和压力中心（COP）摇摆的影响。该研究招募了12名健康的老年志愿者。受试者在SMA上接受阳极tDCS（2 mA）或假刺激15分钟，并在刺激条件之前、之后立即和之后15分钟在测力板上进行自行起搏的快速向上手臂运动任务。APA被测量为三角肌前（AD）和股二头肌（BF）肌肉激活开始之间的时间差。在任务期间的刺激条件之前和之后，测量COP摆动的均方根（RMS）面积、摆动路径长度、站立姿势的中-外侧平均速度和前后平均速度。与基线相比，SMA的阳极tDCS延长了APA，并在刺激后即刻和刺激后15 min缩短了COP摇摆路径长度。这些结果表明，SMA上的阳极tDCS增强了APA功能，并改善了老年人手臂快速向上运动期间的姿势摇摆。
We examined the influence of anodal transcranial direct current stimulation (tDCS) over the supplementary motor area (SMA) on anticipatory postural adjustments (APAs) and center of pressure (COP) sway in older adults. The study enrolled 12 healthy older adult volunteers. Subjects received anodal tDCS (2 mA) or sham stimulation over the SMA for 15 min and performed a self-paced rapid upward arm movement task on a force plate before, immediately after, and 15 min after the stimulation condition. APAs were measured as the temporal difference between activation onset in the deltoid anterior (AD) and biceps femoris (BF) muscles. The root mean square (RMS) area of COP sway, sway path length, medio-lateral mean velocity, and antero-posterior mean velocity of standing posture were also measured before and after the stimulation condition during the task. Anodal tDCS of the SMA extended APAs and decreased COP sway path length immediately after and 15 min after stimulation compared to baseline. These findings suggest that anodal tDCS over the SMA enhanced APAs function and improved postural sway during rapid upward arm movement in older adults.
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影响因子：
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