TMS-induced artifacts on EEG can be reduced by rearrangement of the electrode's lead wire before recording
TMS-induced artifacts on EEG can be reduced by rearrangement of the electrode's lead wire before recording
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DOI：
10.1016/j.clinph.2010.09.004
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发表时间：
2011-05-01
影响因子：
4.7
通讯作者：
Nakajima, Yasoichi
中科院分区：
文献类型：
--
作者：
Sekiguchi, Hirofumi;Takeuchi, Shigeki;Nakajima, Yasoichi
目的：我们的目的是建立一种技术，以减少残留伪影后经颅磁刺激（TMS）从脑电图（EEG）signals.Methods：我们研究线圈方向和刺激强度对残留伪影的影响在一个人工电路，并测试电路面积的大小是否影响残留伪影（模型研究）。在此基础上，对电极引线进行了优化，并在人体头皮上进行了实验结果：经颅磁刺激（TMS）后的残留伪影与8字形线圈的方向和人工回路面积大小有关。根据模型研究，头皮EEG表明，在TMS-EEG实验中，在放大器输入级之前，通过一个步骤-wise程序相对于固定线圈方向重新排列导线。意义：我们的技术可以显着减少短潜伏期TMS诱发电位记录的残留伪影。(C)2010年国际临床神经生理学联合会。由Elsevier爱尔兰有限公司出版。保留所有权利。
Objective: Our purpose was to establish a technique to reduce residual artifacts after transcranial magnetic stimulation (TMS) from electroencephalographic (EEG) signals.Methods: We investigated the effects of coil direction and stimulus intensity on residual artifacts in an artificial circuit, and tested whether or not the size of the circuit area affects the residual artifact (the model study). Based on the results, the optimization by rearranging the electrode's lead wire was tested on the human scalp (the human study).Results: The residual artifact after TMS was dependent on the direction of the figure-of-eight coil, and on the artificial circuit area size.Conclusions: In accordance with the model study, the scalp EEG shows that TMS-induced artifacts can be reduced dramatically before the amplifier input stages in TMS-EEG experiments by a step-wise procedure rearranging the lead wires relative to the fixed coil orientation. Significance: Our technique makes it possible to significantly reduce the residual artifacts from recordings of short-latency TMS-evoked potentials. (C) 2010 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.