ELECTROMYOGRAPHY - SOME METHODOLOGICAL PROBLEMS AND ISSUES

Authors
Citation
Ks. Turker, ELECTROMYOGRAPHY - SOME METHODOLOGICAL PROBLEMS AND ISSUES, Physical therapy, 73(10), 1993, pp. 698-710
Citations number
69
Categorie Soggetti
Orthopedics,Rehabilitation
Journal title
ISSN journal
00319023
Volume
73
Issue
10
Year of publication
1993
Pages
698 - 710
Database
ISI
SICI code
0031-9023(1993)73:10<698:E-SMPA>2.0.ZU;2-W
Abstract
The purpose of this review is to discuss electromyography (EMG) and so me of the problems and issues that are encountered during the recordin g and interpretation of EMG data. Recordings of electrical activity of muscles can be contaminated by interference from the electrical suppl y, mechanical artifacts, stimulus artifacts, and activity of other mus cles The advantages and disadvantages of surface electromyography and intramuscular EMG are compared and contrasted and precautions to be ta ken when recording and interpreting these data are described Surface e lectromyography is usually more susceptible to artifacts than is intra muscular EMG. It is possible, however, to make useful recordings with the surface electrodes from large superficial muscles if appropriate p recautions are observed. Intramuscular electrodes, on the other hand, may be preferred for recording the activity from small peripheral musc les or muscles located deep within the body.