Neurologie et psychiatrie
-
Somatosensory evoked potentials (SEPs) were studied in 115 patients with spinal cord diseases (multiple sclerosis, amyotrophic lateral sclerosis, cervical myelopathy, subacute combined degeneration, myelitis, spinal cord injury, tumours). The SEPs were recorded at three levels: parietal, spinal (cervical or lumbar), and at the Erb point. The central conduction time was also estimated (N9-N13 and lumbar potential (LP): LP-P37). ⋯ In all the 15 patients with inflammatory spinal cord diseases, the SEPs were abnormal and the central conduction time was delayed. In 5 cases with spinal cord injury the SEPs were absent above the lesion. In 15 patients with tumoral compression SEPs to the stimulation of the nerve dependent on the sensitive root compressed as well as the lower limb SEPs were abnormal.