Cortical Source Analysis of Event-Related Potentials: A Developmental Approach.
Cortical Source Analysis of Event-Related Potentials: A Developmental Approach.
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DOI：
10.1016/j.dcn.2022.101092
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发表时间：
2022-04
影响因子：
4.7
通讯作者：
Richards JE
中科院分区：
文献类型：
--
作者：
Conte S;Richards JE
脑电信号的皮层源分析已成为分析大脑活动的重要工具。源分析的目的是重建记录在头皮上的EEG信号的皮层发生器（源）。源重建的质量依赖于正问题的精度，因此也依赖于逆问题的精度。当适当的成像模态（即，结构磁共振成像（MRI）用于描述头部几何形状，精确的电极位置通过头皮上传感器位置的3D图来识别，并且针对头部模型的每个组织类型确定真实的电导率值。这些参数一起有助于定义真实的头部模型。在这里，我们描述了必要的步骤，以重建皮层发电机记录在头皮上的EEG信号。我们提供了一个例子，事件相关电位（ERP）的源重建过程中的面孔处理任务由6个月大的婴儿。我们讨论了必要的调整进行源分析与措施不同的ERP。所提出的管道可以应用于调查不同的认知任务，在年轻和老年参与者。源分析可以克服EEG数据有限的空间分辨率，通过真实的头部模型和电极位置减少定位误差ERP发生器定位在个人、近距离和年龄合适的体积上解剖学感兴趣区域提高了信噪比并降低了家庭错误率
Cortical source analysis of electroencephalographic (EEG) signals has become an important tool in the analysis of brain activity. The aim of source analysis is to reconstruct the cortical generators (sources) of the EEG signal recorded on the scalp. The quality of the source reconstruction relies on the accuracy of the forward problem, and consequently the inverse problem. An accurate forward solution is obtained when an appropriate imaging modality (i.e., structural magnetic resonance imaging – MRI) is used to describe the head geometry, precise electrode locations are identified with 3D maps of the sensor positions on the scalp, and realistic conductivity values are determined for each tissue type of the head model. Together these parameters contribute to the definition of realistic head models. Here, we describe the steps necessary to reconstruct the cortical generators of the EEG signal recorded on the scalp. We provide an example of source reconstruction of event-related potentials (ERPs) during a face-processing task performed by a 6-month-old infant. We discuss the adjustments necessary to perform source analysis with measures different from the ERPs. The proposed pipeline can be applied to the investigation of different cognitive tasks in both younger and older participants. Source analysis can overcome the limited spatial resolution of EEG data Localization errors are reduced with realistic head models and electrode locations ERP generators were localized on individual, close, and age-appropriate volumes Anatomical ROIs improved signal-to-noise ratio and reduced family-wise error rates
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5.7
作者：
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通讯作者：
Makeig S
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4.7
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头部模型导体对听觉源源的影响诱发电位的影响。
影响因子：
2.7
作者：
Conte S;Richards JE
通讯作者：
Richards JE