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动物机体的肌肉纖维在其隨意收缩的过程中,产生一种电的活动。但是这种电的活动很微弱,在人类骨骼肌隨意收缩时的电活动,只有10-2,500微伏特。过去没有如此敏感的器具将其记錄下来,自从发明热电子放大器以后,便能将这种微弱的电流放大,於是便克服了技术上的困难而能将这种电流记錄下来了。肌电波学是用针状电极直接刺入企图检查的肌肉或其表面的皮下,记錄其电活动以供研究的一种科学。肌电波是比较新的一种科学。在临床应用上,到目前为止,一般都认为对於神经损伤的诊断和预后方面,有其一定的价值,因而对於临床工作者是有帮助的。
The muscle fibers of an animal’s body produce an electrical activity during its voluntary contraction. However, this electrical activity is very weak, with only 10-2,500 microvolts of electrical activity at random contraction of human skeletal muscle. In the past, there was no such sensitive instrument to record it. Since the invention of a thermionic amplifier, it has been possible to amplify this faint current so that it overcomes the technical difficulties of recording this current. Electromyography is the science of using acupuncture electrodes to directly penetrate the skin of an attempted muscle or its surface to record its electrical activity for research purposes. Muscle wave is a relatively new science. In clinical application, up to now, it is generally believed that it has certain value for the diagnosis and prognosis of nerve injury, and therefore it is helpful to clinicians.