Somatosensory Evoked Potentials to Lower Extremity Stimulation: Clinical Utility in the Pediatric Age Group
This discussion will deal with somatosensory evoked potentials (SEPs) to lower limb stimulation recorded from the scalp and from surface electrodes attached to the skin over the spine of normal adults, infants and children and patients with diseases affecting the spinal cord and cauda equina. Potentials obtained from surface recordings over the spine are larger and more readily recorded in children. Therefore, this noninvasive method has proven useful in studying maturation of the human nervous system and also in evaluating neural function in children with spinal dysraphism and with diffuse diseases of the nervous system. In adults SEPs obtained from surface electrodes over the spine are often small and difficult to record over rostral cord segments which limits the clinical utility of this technique in older age groups. However,in this situation simultaneous spine and scalp SEPs can be recorded and estimates of spinal conduction velocity can be determined.
KeywordsNeurol Tral Dura Schiff Stim
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- 5.Cracco, J.B., Castells, S., Mark, E. Spinal somatosensory evoked potentials in juvenile diabetics. Ann. Neurol., in press, 1984.Google Scholar
- 9.Desmedt, J.E., Noel, P., Debecker, J., Nameche, J. Maturation of afferent conduction velocity as studied by sensory nerve potentials and by cerebral evoked potentials. In: Desmedt J.E. (ed). New Developments in Electromyography and Clinical Neurophysiology 2: 52–63, Karger, Basel, 1973.Google Scholar
- 15.Liberson, W.T., Gratzur, M., Zales, A., Grabinski, B. Comparison of conduction velocity of motor and sensory fibers determined by different methods. Arch. Phys. Med. 47: 17–23, 1966.Google Scholar
- 16.Lueders, H., Andrish, J., Gurd, A., Weiner, G., Klem, G. Origin of far field subcortical potentials evoked by stimulation of the posterior tibial nerve. Electroenceph. Clin. Neurophysiol. 52: 336344, 1981.Google Scholar
- 17.Phillips, L.H., Daube, J.R. Lumbosacral spinal evoked potentials in humans. Neurol. 30: 1175 1183, 1980.Google Scholar
- 21.Schiff, J. Cracco, R.Q., Rossini, P.M., Cracco, J.B. Spine and scalp somatosensory evoked potentials in normal subjects and patients with spinal cord disease: Evaluation of afferent transmission. Electroenceph. Clin. Neurophysiol., 59, 374–387, 1984.Google Scholar
- 22.Vas, G.A., Cracco, J.B., Cracco, R.Q. Scalp recorded short latency cortical and subcortical somatosensory evoked potentials to peroneal nerve stimulation. Electroenceph. Clin. Neurophysiol. 52: 1–8, 1981.Google Scholar
- 23.Yamada, T., Machida, M., Kimura, J. Far field somatosensory evoked potentials after stimulation of the tibial nerve. Neurol. 32: 1151–1158, 1982.Google Scholar