Premium
The spectrum of concentric macro EMG correlations. Part I. Normal subjects
Author(s) -
Bauermeister Wolfgang,
Jabre Joe F.
Publication year - 1992
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.880151004
Subject(s) - concentric , motor unit , macro , amplitude , work (physics) , electromyography , biomedical engineering , mathematics , physical medicine and rehabilitation , anatomy , physics , medicine , computer science , geometry , optics , programming language , thermodynamics
Abstract Using a concentric macro electrode, both the concentric and macro action potentials of a motor unit were analyzed for duration, area, and amplitude. Eighty‐six different motor units were analyzed from the tibialis anterior muscle in 10 normal subjects. The aim of this work was to compare concentric and macro action potential measurements of the same motor unit. The study revealed significant correlations between concentric and macro samples, with the concentric potential's area correlating better with the macro potential than its amplitude. This shows that the 10 to 15 muscle fibers studied by the concentric electrode serve as a good sample of the motor unit as a whole. We briefly review the technique used in concentric macro EMG, as well as describe the methods used for collecting and comparing both concentric and macro action potentials. © 1992 John Wiley & Sons, Inc.