Basic concepts of needle electromyography

Abstract

Clinical evaluations, nerve conduction studies, and electromyography play major complementary roles in electrophysiologic diagnoses. Electromyography can be used to assess pathologic changes and localize lesions occurring in locations ranging from motor units to anterior-horn cells. Successfully performing electromyography requires knowledge of the anatomy, physiology, and pathology of the peripheral nervous system as well as sufficient skill and interpretation ability. Electromyography techniques include acquiring data from visual/ auditory signals and performing needle positioning, semiquantitation, and interpretation. Here we introduce the basic concepts of electromyography to guide clinicians in performing electromyography appropriately.

Flexible Electrode by Hydrographic Printing for Surface Electromyography Monitoring

“…EMG signal is generated by the electrical activity of the muscle fibers that are activated almost synchronously by the motor neuron innervating them [10][11][12]. EMG can be detected by intramuscular electrodes [13], known as needle EMG or by electrodes mounted on skin [14], known as surface Electromyography (sEMG). As one of the most common signals non-invasive, sEMG is widely used to not only detect neurophysiology and analyze movement or gait, but also interface with man-machine and control prosthesis [8,[15][16][17].…”