Influence of the surface EMG electrode on the compound muscle action potential. Electromyogr Clin Neurophysiol 2006;46(4):235-9
Date
08/26/2006Pubmed ID
16929630Scopus ID
2-s2.0-33747202407 (requires institutional sign-in at Scopus site) 17 CitationsAbstract
The recording characteristics of surface EMG electrodes were investigated. Compound muscle action potential (CMAP) and surface recorded motor unit action potentials were recorded from different muscles, using different surface electrode shapes and sizes. The CMAP was smaller for larger surface electrodes. This was more pronounced in smaller muscles. The CMAP was minimally affected by the geometry of the recording surface. With larger surface electrodes, shunting contributes to the reduction in MUAP amplitude. This is offset by a larger uptake area which gives a much smaller reduction in the CMAP amplitude for the larger muscles.
Author List
Barkhaus PE, Periquet MI, Nandedkar SDAuthor
Paul E. Barkhaus MD Professor in the Neurology department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
AdultElectrodes
Electromyography
Equipment Failure Analysis
Female
Humans
Male
Middle Aged
Muscle Contraction
Muscle, Skeletal
Reproducibility of Results
Sensitivity and Specificity
Skin Physiological Phenomena
