| Author/Editor | Prestor, BP | |
| Title | Intraoperativno elektrofiziološko spremljanje senzoričnih in motoričnih sistemov hrbtenjače | |
| Type | monografija | |
| Place | Ljubljana | |
| Publisher | Univerzitetna klinika za nevrokirurgijo | |
| Publication year | 1991 | |
| Volume | str. 126 | |
| Language | slo | |
| Abstract | The research presents physiological and pathophysiological characteristics of evoked potentials of the somatosensory and motor system of the spinal cord with patients operated due to pain syndromes, syringomyelia, tumors and angioma of the spinal cord. The methodology is based, on one hand, on electrical stimulation of peripheral mixed and sensory nerves as well as on transcutaneous electrical stimulation of the motor cortex of the brain, and on the other hand, on intraoperative subpial recording of evoked potentials from the dorsal surface of the spinal cord. With microneurosurgical operations on exposed spinal cord, subpial registration is a better method of intraoperative sensory and motor evoked spinal cord potentials monitoring then the epidural method. Upon stimulation of the median nerve the N13 wave of cervical spinal cord evoked potentials consists of N13 a and N13b components. The former has its origin in the dorsal horn interneurons and the latter in the nucleus cuneatus. The series of sharp waves superimposed on the cervical negative complex N13 originates from the dorsal column system. Upon stimulation of the tibial nerve the N12 wave, on the conus, merges with the dominant N17 and becomes the N14 component. N12 and N14 are conductive potentials, the negative N17 complex has its origin in dorsal horn interneurons. Sport negative waves superimposed on the lumbosacral negative complex N17 originates in the dorsal columns. The conducted spinal cord evoked potentials consist of the negative waves N1, N2, N3, N4, rarely N5, the group of high amplitude conductive potentials and the group of low amplitude conductive potentials. The source of these potentials lies in ascendent sensory pathways with different conduction velocities. (Abstract truncated) | |
| Descriptors | SPINAL CORD NEUROSURGERY INTRAOPERATIVE MONITORING EVOKED POTENTIALS, SOMATOSENSORY EVOKED POTENTIALS, MOTOR SPINAL CORD DISEASES EFFERENT PATHWAYS PYRAMIDAL TRACTS ELECTRIC STIMULATION AFFERENT PATHWAYS INTERNEURONS |