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首页> 外文期刊>Saudi Journal of Biological Sciences >Modulation of human visuospatial attention analysis by transcranial direct current stimulation (tDCS) in the line bisection performance
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Modulation of human visuospatial attention analysis by transcranial direct current stimulation (tDCS) in the line bisection performance

机译：经颅直流电刺激（tDCS）调节人对视觉空间注意力的分析

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The general population shows physiologic biases in the line bisection performance for visuospatial attention, almost to the left known as pseudoneglect. Previous studies have shown that tDCS affects visuospatial attention in line bisection. This research applies tDCS over left posterior parietal cortice (P3) or right posterior parietal cortice (P4) to explore the effect on pseudoneglect. Subjects randomly were divided into five groups by stimulation distribution: (i) P3-anodal (P3A), (ii) P3-cathodal (P3C), (iii) P4-anodal (P4A), (iv) P4-cathodal (P4C), (v) sham. Participants respectively finished the post-tDCS line-bisection assignment (lines on the left/right side of the monitor (LL/LR), and lines in the center of the monitor (LC)) the same as the pre-tDCS task over the session (P3A, P3C, P4A, P4C and sham) tDCS condition. The principal findings were that P3A tDCS reduced the leftward shift in the horizontal line bisection task, as well as P4C tDCS reduced the leftward shift in LL. Sham stimulation as well as P3C and P4A stimulation didn’t have systematic improvements in the line bisection tasks. Therefore, an activation–orientation model of pseudoneglect is corroborated by these findings. Activation of intact structures in the rebalance of left and right parietal cortex might impose modulating effects on tDCS.
机译：普通人群在线对分表现中表现出生理上的偏见，以引起视觉空间上的关注，几乎在左侧被称为假性忽视。先前的研究表明，tDCS影响线对分的视觉空间注意。本研究将tDCS应用于左后顶叶皮层（P3）或右后顶叶皮层（P4），以探讨对假性忽视的影响。根据刺激分布将受试者随机分为五组：（i）P3-阳极（P3A），（ii）P3-阴极（P3C），（iii）P4-阳极（P4A），（iv）P4-阴极（P4C） ，（v）假。参与者分别完成了tDCS之后的线路两部分分配（监视器左侧/右侧的行（LL / LR）和监视器中央（LC）的行），与tDCS之前的任务相同会话（P3A，P3C，P4A，P4C和假）tDCS条件。主要发现是P3A tDCS减少了水平线平分任务的左移，而P4C tDCS减少了LL的左移。假刺激以及P3C和P4A刺激在线平分任务上没有系统的改善。因此，这些发现证实了假性忽视的激活定向模型。左右顶叶皮层再平衡中完整结构的激活可能会对tDCS产生调节作用。

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