Endplate spike morphology: a clinical and simulation study

Archives of Physical Medicine and Rehabilitation
D DumitruD F Stegeman

Abstract

To describe the various morphologic appearances of endplate spikes, define the theoretical volume conduction basis of these waveforms' morphologies, and simulate "atypical" endplate spike waveforms documented by other investigators. Endplate spikes were recorded from the biceps brachii in healthy individuals using a monopolar needle electrode. The morphologies of these waveforms were compared with those obtained from a computer simulation. Previously documented endplate waveforms were simulated using two fundamental types of biphasic initially negative and positive waveform morphologies. University clinic outpatient electrodiagnostic medicine facility. Five subjects without history or physical evidence of neuromuscular disease. Endplate potential morphologies were assessed with respect to overall waveform shape and number of phases. Computer-generated waveforms for individual endplate spike waveforms were qualitatively compared with those recorded from the subjects. Three fundamental waveforms were documented to arise from the endplate regions of all subjects and were successfully simulated: (1) biphasic initially negative potential from the endplate itself and up to 0.2mm from the endplate, (2) triphasic initially positive pot...Continue Reading

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Citations

Aug 3, 2000·Muscle & Nerve·D Dumitru, J C King
May 12, 2011·Current Pain and Headache Reports·Hong-You Ge, Lars Arendt-Nielsen
Jul 25, 2000·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·D Dumitru
Feb 24, 2001·American Journal of Physical Medicine & Rehabilitation·D G Simons
Jun 26, 2001·American Journal of Physical Medicine & Rehabilitation·D DumitruJ C King
May 7, 2002·American Journal of Physical Medicine & Rehabilitation·David G SimonsLois Statham Simons
Dec 20, 2007·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Zaeem A SiddiqiSyed N Ahmed
Jan 16, 2009·Muscle & Nerve·Jasper R Daube, Devon I Rubin
May 3, 2014·Physical Medicine and Rehabilitation Clinics of North America·Robert D Gerwin
Feb 26, 2004·Muscle & Nerve·Erisela QeramaTroels Staehelin Jensen
May 10, 2007·Muscle & Nerve·Daniel Dumitru, Daniel L Santa Maria
Jun 20, 2006·Acupuncture in Medicine : Journal of the British Medical Acupuncture Society·Joanne Macgregor, Dietrich Graf von Schweinitz

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