Electromyogenic Artifacts and Electroencephalographic Inferences Revisited.

Electromyogenic Artifacts and Electroencephalographic Inferences Revisited.
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DOI:
10.1016/j.neuroimage.2010.07.057
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发表时间:
2011-01-01
期刊:
影响因子:
5.7
通讯作者:
Davidson RJ
Davidson RJ
中科院分区:
医学1区
文献类型:
--
作者:
McMenamin BW;Shackman AJ;Greischar LL;Davidson RJ

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近年来,人们对使用振荡脑电活动来理解认知和情绪的神经基础重新产生了兴趣。来自颅周肌肉的电信号对这种研究的有效性构成了深刻的威胁。最近,研究独立成分分析(伊卡)是否提供了一个敏感和具体的手段,纠正肌电(EMG)的文物。这份报告引发了相应的评论,在这里,我们重新讨论了EMG如何改变从EEG得出的推论以及如何将其有害影响降至最低的问题。因此,我们简要地总结了EMG问题的突出特点,并回顾了最近的研究调查伊卡纠正EMG和其他文物的效用。然后,我们直接解决Olbrich阐述的关键问题,并提供了他们的努力验证伊卡的批评。最后,我们确定了未来的方法学工作的关键领域,并提供了一些实用的建议,智能地解决EMG伪影。
Recent years have witnessed a renewed interest in using oscillatory brain electrical activity to understand the neural bases of cognition and emotion. Electrical signals originating from pericranial muscles represent a profound threat to the validity of such research. Recently, examined whether independent component analysis (ICA) provides a sensitive and specific means of correcting electromyogenic (EMG) artifacts. This report sparked the accompanying commentary, and here we revisit the question of how EMG can alter inferences drawn from the EEG and what can be done to minimize its pernicious effects. Accordingly, we briefly summarize salient features of the EMG problem and review recent research investigating the utility of ICA for correcting EMG and other artifacts. We then directly address the key concerns articulated by Olbrich and provide a critique of their efforts at validating ICA. We conclude by identifying key areas for future methodological work and offer some practical recommendations for intelligently addressing EMG artifact.
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