Visual and somatosensory evoked potentials and F-wave latency measurements in hereditary neuropathy with liability to pressure palsies.
Pattern shift visual evoked potentials (VEPs), cervical and cortical somatosensory evoked responses (SEPs) and motor conduction velocities studied by F-wave latency measurements were investigated in two family members with hereditary neuropathy with liability to pressure palsies (HN-PP). In both cases in VEPs and SEP conduction times N13-N20 were normal. A bilateral pathological increase of latencies of early SEP components, N9-N13 transit times and F-wave latencies revealed a lesion in the proximal parts of the median nerves close to the spinal cord in the older patient. These abnormalities emphasize the close relationship of HN-PP with hereditary polyradiculopathy (Mayer 1975).
D000328:Adult; D002648:Child; D004576:Electromyography; D005073:Evoked Potentials, Somatosensory; D005074:Evoked Potentials, Visual; D005260:Female; D009477:Hereditary Sensory and Autonomic Neuropathies / Q000175:diagnosis* / Q000235:genetics / Q000503:physiopathology; D006801:Humans; D008297:Male; D008475:Median Nerve / Q000503:physiopathology; D009431:Neural Conduction; D009900:Optic Nerve / Q000503:physiopathology; D010543:Peroneal Nerve / Q000503:physiopathology; D011930:Reaction Time; D014459:Ulnar Nerve / Q000503:physiopathology