目的探讨发作期直流电漂移(ictal DC shift)在难治性伴海马硬化的内侧颞叶癫痫(MTLE-HS)中的定位价值。方法回顾性分析18例MTLE-HS患者的临床资料,进行非侵袭性和侵袭性术前评估,对发作起始区分别使用传统频段颅内电极脑电(iEEG)技术和...目的探讨发作期直流电漂移(ictal DC shift)在难治性伴海马硬化的内侧颞叶癫痫(MTLE-HS)中的定位价值。方法回顾性分析18例MTLE-HS患者的临床资料,进行非侵袭性和侵袭性术前评估,对发作起始区分别使用传统频段颅内电极脑电(iEEG)技术和基于宽频脑电技术的ictal DC shift进行定位,比较两组之间的时空分布差异及其与术后病理和预后之间的关系。结果 Ictal DC shift组空间分布明显较iEEG组更为局限,时间分布晚于iEEG组。结论 Ictal DC shift可能为致痫灶的电生理标志物。展开更多
A sounding rocket experiment undertaken by the Chinese Meridian Project from a low latitude station on Hainan Island(19.5°N,109.1°E),China,measured the DC electric field during 05:45-05:52 LT on April 5,2013...A sounding rocket experiment undertaken by the Chinese Meridian Project from a low latitude station on Hainan Island(19.5°N,109.1°E),China,measured the DC electric field during 05:45-05:52 LT on April 5,2013.The data observed using a set of electric field double probes,as part of the rocket's scientific payload,revealed the special profile of how the vectors of the DC electric field vary with altitude between 130 and 190 km.During the experiment,the vertical electric field was downward,and the maximum vertical electric field was nearly 5.1 mV/m near the altitude of 176 km.The zonal electric field was eastward and slightly less than 0.6 mV/m.The plasma drift velocity was estimated from the E×B motion,and the zonal drift velocity was eastward and of the order of 100 m/s.The zonal wind velocity was also estimated using the drift velocity near the maximum density height in the F1-region,and it was found to be nearly 120 m/s.This work constituted the first in situ measurement of the DC electric field conducted within the Fl-region(between 130 and 190 km) in the East Asian Sector.展开更多
文摘目的探讨发作期直流电漂移(ictal DC shift)在难治性伴海马硬化的内侧颞叶癫痫(MTLE-HS)中的定位价值。方法回顾性分析18例MTLE-HS患者的临床资料,进行非侵袭性和侵袭性术前评估,对发作起始区分别使用传统频段颅内电极脑电(iEEG)技术和基于宽频脑电技术的ictal DC shift进行定位,比较两组之间的时空分布差异及其与术后病理和预后之间的关系。结果 Ictal DC shift组空间分布明显较iEEG组更为局限,时间分布晚于iEEG组。结论 Ictal DC shift可能为致痫灶的电生理标志物。
基金supported by the Specialized Research Fund for State Key Laboratories and National Space Science Center-135 (Sounding Rocket Project)National Natural Science Foundation of China(Grant Nos.40774081 & 2011CB811404)+2 种基金Chinese Academy of Sciences(Grant No.KZZD-EW-01-2)Chinese Academy of Science Fellowship for Young International Scientist Grant(Grant No.2010Y1GB3)Chinese Academy of Sciences-The Third World Academy of Sciences (CAS-TWAS) Fellowship for Postdoctoral and Visiting Scholar(Grant No. 201377GB0001)
文摘A sounding rocket experiment undertaken by the Chinese Meridian Project from a low latitude station on Hainan Island(19.5°N,109.1°E),China,measured the DC electric field during 05:45-05:52 LT on April 5,2013.The data observed using a set of electric field double probes,as part of the rocket's scientific payload,revealed the special profile of how the vectors of the DC electric field vary with altitude between 130 and 190 km.During the experiment,the vertical electric field was downward,and the maximum vertical electric field was nearly 5.1 mV/m near the altitude of 176 km.The zonal electric field was eastward and slightly less than 0.6 mV/m.The plasma drift velocity was estimated from the E×B motion,and the zonal drift velocity was eastward and of the order of 100 m/s.The zonal wind velocity was also estimated using the drift velocity near the maximum density height in the F1-region,and it was found to be nearly 120 m/s.This work constituted the first in situ measurement of the DC electric field conducted within the Fl-region(between 130 and 190 km) in the East Asian Sector.
