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Epidural and subpial cortico-spinal potentials evoked by transcutaneous motor cortex stimulation during spinal cord surgeryPrestor, Borut ; Žgur, Tomaž ; Dolenc, Vinko V.Cortico-spinal potentials (CSPs) to transcutaneous motor cortex stimulation were recorded epidurally and subpially in 8 patients undergoittg spinal cord surgery. In 6 patients without cortico-spinal ... tract involvement, a CSP consisted of a direct (D) wave, which was followed by indirect (I) waves at a higher stimulus intensity. The D wave appearcd at 25-50 per cent of the maximum stimulus intensity. With increasing stimulus its amplitude levelled off betwcen 10 and 30 microV when recorded epidurally. At high stimulus a prominent indirect potential (I' wave) appeared which followed the D wave after 2.2-3.6 msec. lite D and I' wave conduction v©locities calculated in 3 cascs werc idcntical - 65, 70 and 80 m/sec. Subpial records had largcr amplitudes than epidural ones but were of the same configuration. In 2 patients with spastic paraparesis the CSP changes were detected below the site of the cord lesion.Vir: New trends and advanced techniques in clinical neurophysiology (str. 348-351)Vrsta gradiva - članek, sestavni delLeto - 1990Jezik - angleškiCOBISS.SI-ID - 1463257
Avtor
Prestor, Borut |
Žgur, Tomaž |
Dolenc, Vinko V.
Teme
Motor cortex |
Physiology |
Pyramidal tracts |
Physiology |
Spinal cord |
Physiology |
Spinal cord diseases |
Physiology |
Evoked potentials |
Transcutaneous electric nerve stimulation |
Adolescence |
Adult |
Electric stimulation |
Electroencephalography |
Epidural space |
Anatomy and histology |
Pia mater |
Physiology |
Reaction time |
Spinal cord |
Surgery |
Spinal cord diseases |
Surgery
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Žgur, Tomaž | 07032 |
Dolenc, Vinko V. | 02710 |
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