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http://dx.doi.org/10.15324/kjcls.2019.51.2.198

Evoked Potentials before the Intractable Epilepsy Surgery  

Lim, Sung Hyuk (Department of Neurology, Samsung Medical Center)
Park, Sang Ku (Department of Neurology, Samsung Medical Center)
Baek, Jae Seung (Department of Neurology, Samsung Medical Center)
Kim, Kab Kyu (Department of Neurology, Catholic University of Korea, Seoul St. Mary's Hospital)
Kim, Ki Eob (Department of Neurology, Korea University Anam Hospital)
Lee, Yu Ji (Department of Otolaryngology, Ehwa Womans University Seoul Hospital)
Publication Information
Korean Journal of Clinical Laboratory Science / v.51, no.2, 2019 , pp. 198-204 More about this Journal
Abstract
Various treatments can be attempted in patients with intractable epilepsy, in whom the symptoms of seizures are not controlled by various drugs. On the other hand, in patients requiring a surgical method, a preoperative examination is needed to determine the portion of seizure site to be resected. Electrodes are inserted into the cerebral cortex for accurate lesion measurements and safe operation. The electrodes inserted in the cortex not only record the electroencephalography (EEG), but also allow various tests to confirm the function of the part. One of these methods is the evoked potential test. From January 2015 to December 2018, the trends of measured waveforms in were analyzed 70 patients. The somatosensory evoked potential (SSEP) recorded on the electrode inserted in the cerebral cortex can be searched for the pathway of the central sulcus to avoid the primary motor area and primary sensory area. In addition, using the middle latency auditory evoked potentials (MLAEP) and flash visual evoked potentials (FVEP), the functional cortex in the auditory cortex and the visual cortex were compared with the seizure focus point on the EEG to help determine the location of the ablation and minimize functional impairment after surgery.
Keywords
Evoked potential; Epilepsy surgery; MLAEP; SSEP; VEP;
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