Related Experiment Video
Updated: May 25, 2026

Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation
Published on: September 13, 2015
Techniques and applications of EMG: measuring motor units from structure to function
Rachel C Thornton1, Andrew W Michell
1Department of Clinical Neuroscience, Addenbrookes Hospital, Cambridge University Hospitals NHS Trust, Hills Road, Cambridge, CB2 0QQ, UK. rachelcthornton77@gmail.com
Abstract:
Needle electromyography (EMG) is an established method of evaluating motor unit and muscle fibre function and pathology in clinical practice, while the development of advanced techniques including single-fibre EMG and combined recordings with other modalities have become increasingly useful in research. The development of quantitative EMG in particular had led to greater reproducibility and inter-rater reliability. This review provides an overview of standard needle EMG as well as discussing advanced recording and analysis techniques and their increasing role in clinical research.
Related Concept Videos
Motor Unit Stimulation
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
Motor Units
Motor units come in different sizes, with smaller units...
Motor Units

