Cortical-evoked responses before and after percutaneous thermocoagulation of the Gasserian ganglion. Preliminary report.
Percutaneous thermocoagulation of the Gasserian ganglion allows a good preservation of facial touch sensation with a complete and immediate regression of the symptomatology in a majority of cases. Neurophysiological bases are the peculiar resistance to the thermal lesion of the large myelinated fibers compared to the relatively smaller fibers. The study of the cortical-evoked responses before and after surgery suggests that the afferent volley travels in preference along these large myelinated fibers.
D002540:Cerebral Cortex / Q000503:physiopathology; D004564:Electrocoagulation / Q000379:methods*; D005073:Evoked Potentials, Somatosensory; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014110:Touch / Q000502:physiology; D012668:Trigeminal Ganglion / Q000503:physiopathology / Q000601:surgery*; D014276:Trigeminal Nerve / Q000601:surgery*; D014277:Trigeminal Neuralgia / Q000503:physiopathology / Q000601:surgery*