Jitter correction: a computer algorithm for reduction of the velocity recovery function artifact

The measurement of neuromuscular jitter in single fiber electromyography may be artifactually raised by a component of interdischarge interval (IDI)-dependent jitter caused by the velocity recovery function (VRF) in muscle fibers. We have developed a computer algorithm for on-line mathematical corre...

Full description

Saved in:
Bibliographic Details
Published in:Muscle & nerve Vol. 11; no. 6; p. 534
Main Authors: Davis, G R, Ingram, D A, Fincham, W F, Swash, M, Schwartz, M S
Format: Journal Article
Language:English
Published: United States 01.06.1988
Subjects:
Action Potentials
Adult
Algorithms
Electromyography
Humans
Motor Neurons - physiology
Neural Conduction
Neuromuscular Junction - physiology
Software
Time Factors
ISSN:0148-639X
Online Access:Get more information
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The measurement of neuromuscular jitter in single fiber electromyography may be artifactually raised by a component of interdischarge interval (IDI)-dependent jitter caused by the velocity recovery function (VRF) in muscle fibers. We have developed a computer algorithm for on-line mathematical correction for this artifact, thus improving the reliability of neuromuscular jitter estimates. The method, based on a modeling technique, was validated using intramuscular stimulation in order to either exclude an IDI-dependent component (using regular stimulation) or to include an IDI-dependent component (using pseudorandom stimulation). In 10 normal subjects the distribution of 106 corrected jitter values obtained using voluntary activity showed no difference from the measured values. This finding implies that previously published values for normal jitter are not likely to have been influenced by the VRF effect.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0148-639X
DOI:10.1002/mus.880110603