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首页> 外文期刊>The European Journal of Neuroscience >Short-lived brain state after cued motor imagery in naive subjects.
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Short-lived brain state after cued motor imagery in naive subjects.

机译：在天真受试者中提示运动图像后出现短暂的大脑状态。

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摘要

Multi-channel electroencephalography recordings have shown that a visual cue, indicating right hand, left hand or foot motor imagery, can induce a short-lived brain state in the order of about 500 ms. In the present study, 10 able-bodied subjects without any motor imagery experience (naive subjects) were asked to imagine the indicated limb movement for some seconds. Common spatial filtering and linear single-trial classification was applied to discriminate between two conditions (two brain states: right hand vs. left hand, left hand vs. foot and right hand vs. foot). The corresponding classification accuracies (mean +/- SD) were 80.0 +/- 10.6%, 83.3 +/- 10.2% and 83.6 +/- 8.8%, respectively. Inspection of central mu and beta rhythms revealed a short-lasting somatotopically specific event-related desynchronization (ERD) in the upper mu and/or beta bands starting approximately 300 ms after the cue onset and lasting for less than 1 s.
机译：多通道脑电图记录表明，指示右手，左手或脚部运动图像的视觉提示可以诱发大约500毫秒左右的短暂大脑状态。在本研究中，要求10名身体健康的受试者（没有任何运动图像经验）（天真的受试者）想象指示的肢体运动几秒钟。应用常见的空间过滤和线性单项试验分类来区分两种情况（两种大脑状态：右手与左手，左手与脚以及右手与脚）。相应的分类精度（平均+/- SD）分别为80.0 +/- 10.6％，83.3 +/- 10.2％和83.6 +/- 8.8％。对中心mu和β节律的检查显示，在提示发生后约300 ms开始，在上部mu和/或beta波段中出现了短时的躯体特异事件相关失步（ERD），持续时间少于1 s。

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