A computerized re-evaluation of the collision technique
Nix, W.A.; Lüder, G.; Hopf, H.C.; Lüth, G.
Electromyography and Clinical Neurophysiology 29(7-8): 391-397
1989
ISSN/ISBN: 0301-150X PMID: 2606063 Document Number: 337719
A computer program is described for the collision technique by which data acquisition and data interpretation is possible. Paired stimuli with varying interstimulus times evoke a muscle action potential. The amplitude or the rectified area integral as a function of interstimulus times was used to define the scatter of conduction velocities within the ulnar nerve. In normal and slightly distorted EMG signals the amplitude and area produces the same scatter. In distorted potentials the integrated area is more sensitive. The technique was furthermore used to separate two different age groups of normal persons. Significant differences were seen as well as in an age matched group of patients with myotonic dystrophy. The collision technique and the computer program proved to be sensitive and applicable in routine examinations.