Somatosensory evoked potential changes during muscle testing

Gerald Leisman, Philip Shambaugh, Avery H. Ferentz

Research output: Contribution to journalArticlepeer-review


Fifteen naive subjects with no known neurological problems were tested by means of manual muscle testing to determine two "strong" and one "weak" muscle on a limb contralateral to the stimulated side. Somatosensory evoked potentials (SEP) were then recorded from contralateral median nerve stimulation while a naive tester tested the three previously identified muscles. In all subjects the baseline (no muscle test) and control "strong" muscle test recordings were comparable while the recording from the "weak" muscle test showed increased amplitudes in contralateral layer components. These finidngs suggest a neurologic basis for manual muscle testing.

Original languageEnglish
Pages (from-to)143-151
Number of pages9
JournalInternational Journal of Neuroscience
Issue number1-2
StatePublished - 1989
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported in part by a grant from the International College of Applied Kinesiology

ASJC Scopus subject areas

  • General Neuroscience


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