Barlow J S
Electroencephalogr Clin Neurophysiol. 1983 Apr;55(4):487-91. doi: 10.1016/0013-4694(83)90137-2.
An electronic circuit is described for minimizing or eliminating muscle artifact in EEGs. The principle of operation of the circuit is that of a relatively high frequency (250 Hz) sample-and-hold procedure which is interrupted for the duration of a muscle potential. Detection of the presence of the latter is based on a steepness criterion, with a manually adjusted threshold. The circuit is primarily effective for repetitive single muscle spikes. It is not effective if there is a continuous muscle interference pattern, but it can still be useful if the muscle interference pattern is not truly continuous. Very sharp EEG spikes may also be eliminated or at least altered, but less sharp EEG spikes can be passed with little or no change in their wave form.
本文描述了一种用于最小化或消除脑电图（EEG）中肌肉伪迹的电子电路。该电路的工作原理是基于一种相对高频（250Hz）的采样保持程序，该程序在肌肉电位持续期间中断。通过一个手动调整阈值的陡度标准来检测肌肉电位的存在。该电路主要对重复性单肌肉尖峰有效。如果存在连续的肌肉干扰模式，则该电路无效，但如果肌肉干扰模式并非真正连续，该电路仍可能有用。非常尖锐的EEG尖峰也可能被消除或至少改变，而不太尖锐的EEG尖峰可以在其波形几乎没有变化或没有变化的情况下通过。
