Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
Effect of current conduction for local epileptiform discharges in patients with temporal lobe epilepsy.
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Zhang Shaohui, Wang Yangshuo, Liu Chunxiu, Yuan Liu, Zhai Feng, Liu Tinghong, Liang Shuli
Аннотация
OBJECTIVES: The effects of current conduction were researched to confirm that it can decrease focal epileptogenicity in patients with temporal lobe epilepsy (TLE).
METHODS: Data from 13 patients with mesial TLE were collected. After no less than two habitual seizures were captured during stereo-electroencephalogram monitoring, current conduction was measured in the hippocampus to a homemade, zero potential circuit board. The interictal spike, ripple, fast ripple, and ictal epileptogenicity index (EI) changes were analyzed in the hippocampus, amygdala, and anterior and middle temporal neocortex regions.
RESULTS: Significant differences were found in the percentage of patients without spikes in the temporal neocortex between pre- and post-current conduction. Significant decreases in average ripple rates were found in the hippocampus and amygdala after current conduction. The percentage of fast ripple rate decrease in the hippocampus and amygdala was significantly higher than that in the temporal neocortex, and significant decreases were found in the fast ripple rate in the hippocampus from post- to pre-current conduction. Significant decreases were found in the EI values after current conduction in the amygdala and middle temporal lobe compared to the EI values before current conduction.
CONCLUSION: After current conduction in patients with TLE, the spike rate decreases in the hippocampus, amygdala, and anterior and middle temporal neocortex, the ripple rate decreases in the hippocampus and amygdala, the fast ripple decreases in the hippocampus, and the EI decreases in the amygdala and middle temporal neocortex. Current conduction can reduce epileptogenicity in the hippocampus in mesial TLE.
METHODS: Data from 13 patients with mesial TLE were collected. After no less than two habitual seizures were captured during stereo-electroencephalogram monitoring, current conduction was measured in the hippocampus to a homemade, zero potential circuit board. The interictal spike, ripple, fast ripple, and ictal epileptogenicity index (EI) changes were analyzed in the hippocampus, amygdala, and anterior and middle temporal neocortex regions.
RESULTS: Significant differences were found in the percentage of patients without spikes in the temporal neocortex between pre- and post-current conduction. Significant decreases in average ripple rates were found in the hippocampus and amygdala after current conduction. The percentage of fast ripple rate decrease in the hippocampus and amygdala was significantly higher than that in the temporal neocortex, and significant decreases were found in the fast ripple rate in the hippocampus from post- to pre-current conduction. Significant decreases were found in the EI values after current conduction in the amygdala and middle temporal lobe compared to the EI values before current conduction.
CONCLUSION: After current conduction in patients with TLE, the spike rate decreases in the hippocampus, amygdala, and anterior and middle temporal neocortex, the ripple rate decreases in the hippocampus and amygdala, the fast ripple decreases in the hippocampus, and the EI decreases in the amygdala and middle temporal neocortex. Current conduction can reduce epileptogenicity in the hippocampus in mesial TLE.