Merletti Roberto, Holobar Ales, Farina Dario
Laboratorio di Ingegneria del Sistema Neuromuscolare, Dipartimento di Elettronica, Politecnico di Torino, Corso Duca degli Abruzzi, 24 - 10129 Torino, Italy.
J Electromyogr Kinesiol. 2008 Dec;18(6):879-90. doi: 10.1016/j.jelekin.2008.09.002. Epub 2008 Nov 11.
Although the behaviour of individual motor units is classically studied with intramuscular EMG, recently developed techniques allow its analysis also from EMG recorded in multiple locations over the skin surface (high-density surface EMG). The analysis of motor units from the surface EMG is useful when the insertion of needles is not desirable or not possible. Moreover, surface EMG allows the measure of motor unit properties which are difficult to assess with invasive technology (e.g., muscle fiber conduction velocity or location of innervation zones) and may increase the number of detectable motor units with respect to selective intramuscular recordings. Although some limitations remain, both the discharge pattern and muscle fiber properties of individual motor units can currently be analyzed non-invasively. This review presents the conditions and methodologies which allow the investigation of motor units with surface EMG.
虽然单个运动单位的行为传统上是通过肌内肌电图进行研究的，但最近开发的技术也允许从皮肤表面多个位置记录的肌电图（高密度表面肌电图）对其进行分析。当不希望或不可能插入针时，从表面肌电图分析运动单位是有用的。此外，表面肌电图可以测量用侵入性技术难以评估的运动单位特性（例如，肌纤维传导速度或神经支配区的位置），并且相对于选择性肌内记录，可能会增加可检测到的运动单位数量。尽管仍然存在一些局限性，但目前可以非侵入性地分析单个运动单位的放电模式和肌纤维特性。本综述介绍了允许用表面肌电图研究运动单位的条件和方法。
