Magnetoencephalography in pediatric neuroimaging
Magnetoencephalography in pediatric neuroimaging
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DOI：
10.1111/1467-7687.00375
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发表时间：
2002-08-01
影响因子：
3.7
通讯作者：
Paetau, R
中科院分区：
文献类型：
--
作者：
Paetau, R
神经电流产生脑电图（EEG）和脑磁图（MEG）。MEG对切向电流（来自裂隙皮质）具有选择性敏感性，并且与EEG相比失真较少。MEG的主要目标是确定事件相关反应、自发脑振荡或癫痫样活动的皮质发生器的位置和时间。MEG在最佳条件下提供了几毫米的空间精度，结合出色的亚毫秒时间分辨率，它们共同实现了分布式神经活动的时空跟踪，例如。在认知任务或癫痫放电期间。虽然目前小儿脑磁图的重点是量身定制的癫痫手术，但脑磁图的完全无创性也为研究健康和发育异常儿童的脑功能提供了无限的可能性。
Neural currents give rise to electroencephalogram (EEG) and magnetoencephalogram (MEG). MEG has selective sensitivity to tangential currents (from fissural cortex), and less distorted signals compared with EEG A major goal of MEG is to determine the location and timing of cortical generators for event-related responses, spontaneous brain oscillations or epileptiform activity. MEG provides a spatial accuracy of a few mm under optimal conditions, combined with an excellent submillisecond temporal resolution, which together enable spatiotemporal tracking of distributed neural activities, e g. during cognitive tasks or epileptic discharges. While the present focus of pediatric MEG is on tailored epilepsy surgery, the complete noninvasiveness of MEG also provides unlimited possibilities to study the brain functions of healthy and developmentally deviant children.