Assessing the accuracy of topographic EEG mapping for determining local brain function
Assessing the accuracy of topographic EEG mapping for determining local brain function
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DOI：
10.1016/s0013-4694(98)00092-3
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发表时间：
1998-12-01
期刊：
影响因子：
--
通讯作者：
Leuchter, AF
中科院分区：
文献类型：
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作者：
Cook, IA;O'Hara, R;Leuchter, AF
目的：关于局部脑电图（EEG）图评估局部脑功能的准确性，已有相当多的讨论。我们进行了这项研究，以测试EEG映射的准确性，通过检查之间的关联的电活动和灌注下每个电极作为另一种措施的局部cerebral function.Methods：EEG映射进行同时与（H2O）-O-15正电子发射断层扫描（PET）在6名正常成人受试者，在休息和在一个简单的运动任务。EEG数据处理使用3种不同的蒙太奇;两个EEG功率措施（绝对和相对功率）examined.Results：相对功率有更强的关联灌注比绝对功率。此外，计算双极电极对的功率和共享公共电极的电极对的平均功率与灌注的相关性比参考或单源蒙太奇的数据更强。结论：这些发现表明：（1）地形图脑电地形图可以准确地反映局部脑功能的方式是可比的其他方法，（2）脑电测量和导联的选择对脑电图反映局部活动和功能的程度有显著影响。(C)1998爱思唯尔科学爱尔兰有限公司保留所有权利。
Objective: There has been considerable discussion regarding the accuracy of topographic electroencephalographic (EEG) maps for assessing local cerebral function. We performed this study to test the accuracy of EEG mapping by examining the association between electrical activity and the perfusion under each electrode as another measure of local cerebral function.Methods: EEG mapping was performed simultaneously with (H2O)-O-15 positron emission tomography (PET) scanning in 6 normal adult subjects, both at rest and during a simple motor task. EEG data were processed using 3 different montages; two EEG power measures (absolute and relative power) were examined.Results: Relative power had much stronger associations with perfusion than did absolute power. In addition, calculating power for bipolar electrode pairs and averaging power over electrode pairs sharing a common electrode yielded stronger associations with perfusion than data from referential or single source montages.Conclusions: These findings indicate (1) that topographic EEG mapping can accurately reflect local brain function in a way that is comparable to other methods, and (2) that the choice of EEG measure and montage have a significant influence on the degree with which maps reflect this local activity and function. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.