Cumulative vibratory index and recovery curve parameters of the soleus H-reflex in dystonia and spasticity: A discriminant analysis

L.J. Bour*, B.W. Ongerboer de Visser, J.D. Speelman, J.H.T.M. Koelman

*Corresponding author for this work

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Abstract

Soleus H-reflex studies were carried out in a control group consisting of 43 healthy individuals, 22 patients with upper motoneuron lesions having spasticity, and 6 patients with dystonia. H-M recruitment curves with and without vibration of the Achilles tendon as well as H-reflex recovery curves at H-max and half H-max intensity were determined. From the experimental data several variables were derived, such as the cumulative vibratory index and the local maxima and minima of the recovery curves. To assess the collective values of several features, a discriminant analysis was performed. The methods presented improve the specificity of the quantitative neurophysiological measure of dystonia and spasticity.

Original languageEnglish
Title of host publicationImages of the Twenty-First Century
Subtitle of host publicationProceedings of the Annual International Engineering in Medicine and Biology Society
Place of PublicationLos Alamitos, CA
PublisherIEEE
Pages997-999
Number of pages3
DOIs
Publication statusPublished - 1 Nov 1989
Externally publishedYes
Event11th Annual International Conference of the IEEE Engineering in Medicine and Biology Society 1989: Images of the Twenty-First Century - Seattle, United States
Duration: 9 Nov 198912 Nov 1989
Conference number: 11

Publication series

NameAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
PublisherIEEE
Volume1989
ISSN (Print)0589-1019

Conference

Conference11th Annual International Conference of the IEEE Engineering in Medicine and Biology Society 1989
CountryUnited States
CitySeattle
Period9/11/8912/11/89

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