Show Summary Details
Page of

Electromyography and Other Measures of Muscle Function 

Electromyography and Other Measures of Muscle Function
Electromyography and Other Measures of Muscle Function

Jun Kimura

Page of

PRINTED FROM OXFORD MEDICINE ONLINE ( © Oxford University Press, 2021. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a title in Oxford Medicine Online for personal use (for details see Privacy Policy and Legal Notice).

date: 27 July 2021

This chapter discusses the principles of electromyography based on physiology, recording techniques,and contraindications. Studies are consistent withassessing insertional activities and spontaneous discharges, and analyzing motor unit action potentials characterized by amplitude, rise time, duration, and discharge pattern. Needle study evaluates the integrity of the entire motor system, which consists of upper and lower motoneurons, neuromuscular junction, and muscle. To localize the responsible lesion in one of these sites, the trained physician must conduct the study as an extension of the physical examination. The findings in the initially tested muscle dictate the course of subsequent exploration. Thus, no rigid protocol applies for a routine examination. Certain basic principles hold, but a flexible approach best fulfills the needs of individual patients.

Access to the complete content on Oxford Medicine Online requires a subscription or purchase. Public users are able to search the site and view the abstracts for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can't find the answer there, please contact us.