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  • Subpially recorded cervical spinal cord evoked potentials in syringomyelia
    Prestor, Borut ; Žgur, Tomaž ; Dolenc, Vinko V.
    Intraoperative spinal cord evoked potentials (SCEPs) to median nerve stimulation were detected subpially from the dorsal surface of the cervical spinal cord in 5 patients with cervical syringomyelia ... and were compared to normal SCEPs obtained from the unaffected side in 6 patients during intraoperative monitoring of dorsal root entry zone lesion. Normal SCEP began with a positive deflection P9 and a complex N11/N13 with several low amplitudeshort potentials superimposed on the N11/N13. The complex was followed by a second negative potential N2 and a late prolonged positivity, P.In the 4 patients in whom median nerve somatosensory evoked potentials (SEPs) were present preoperatively, SCEP consisted of the N11 potential and the following low amplitude short (LAS) potentials, while the N13 wave was missing. In the fifth patient, in whom the preoperative median nerve SEP was missing, SCEPs were of much lower amplitude and shorter duration than normal. The potentials N2 and P were not recorded in any of our 5 patients. Changes inN13 wave, N2 and P potentials noted in syringomyelia were presumed to be theresult of destruction of the spinal cord dorsal horn neurons caused by spinal cord central cavitation.
    Vir: Electroencephalography and Clinical Neurophysiology. - ISSN 0013-4694 (Letn. 80, 1991, str. 155-158)
    Vrsta gradiva - članek, sestavni del
    Leto - 1991
    Jezik - angleški
    COBISS.SI-ID - 21927641

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