Nature of EMG signal 肌电图信号的本质
Even surface EMG has characteristic form that shows it is an EMG
即使是表面肌电图也有肌电图的特征性形式
Varies rapidly over times of about 5-10 ms, from positive to negative and back
在大约5～10毫秒内快速变化数次，从阳极到阴极来来回回
Recording of EMG signal 肌电图信号的记录
Regular urodynamics equipment far too slow to record form of EMG signal
通常的尿流动力学设备太慢而不能记录肌电图信号的形式
Signal usually rectified, filtered and recorded at slow speed
信号通常以低速度整流、过滤、记录
From this recording you can’t tell the form of the signal at all
从这里所记录到的结果你根本就不能区分信号的形式
You can’t even tell if it is an EMG or not
你甚至不能区分是不是肌电图信号
Beijing Chinese Subtitling Translation Service Agency has translated many technical documents about Nature of EMG signal and Recording of EMG signal.
华译网上海翻译公司曾经翻译过大量有关肌电图信号的本质和肌电图信号的记录的资料文件。
Artifacts in EMG signals 肌电图信号的假象
EMG signals are very small and very susceptible to artifacts and noise
肌电图信号很小，很容易产生假象及噪音
Monitoring via audio amplifier or via an oscilloscope is essential to distinguish artifacts from real EMG
在区分假象与真正的肌电图信号时，有必要通过音频放大器或者示波器进行监测
Audio monitoring of EMG 肌电图的声频监测
Sound can distinguish a real physiological EMG signal from artifacts
声音能区分真正的生理性肌电图信号与假象
A real EMG sounds like a popping noise (or a rainstorm on a roof if of large size)
真正的肌电图信号就像爆音噪音（或者很大的屋顶上的暴风雨声）
Electrical interference, as from a pump, often sounds like a crackle
来自泵的电信号干扰通常听起来像捻发音
Electrical mains (60 Hz) hum sounds like “a hum”
主电源 (60 Hz) 嗡嗡声听起来像“嗡嗡”声
You need a good-quality audio system to distinguish a crackle from a pop
你需要一台质量良好的声频系统来区分捻发音与爆音
