Correspondence of electroencephalography and near-infrared spectroscopy sensitivities to the cerebral cortex using a high-density layout.
Correspondence of electroencephalography and near-infrared spectroscopy sensitivities to the cerebral cortex using a high-density layout.
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DOI：
10.1117/1.nph.1.2.025001
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发表时间：
2014-10
期刊：
影响因子：
5.3
通讯作者：
Diamond SG
中科院分区：
文献类型：
--
作者：
Giacometti P;Diamond SG
本研究探讨了脑电图（EEG）和近红外光谱（NIRS）的皮质敏感性的对应关系。采用分节结构磁共振成像技术，计算了采用10-5脑电定位系统后329个脑电电极的脑电正演模型对大脑皮层的敏感性。使用10-5 EEG定位系统的一个子集，从放置在头皮上的32个源和32个检测器光电器件中选择156个NIRS源-检测器对，计算同一受试者的NIRS前向模型灵敏度。共定位NIRS源-检测器对组与脑电通道的灵敏度相关R = 0.46±0.08。与EEG电极灵敏度相关度最大的近红外源-检测器组被制成表格。脑电点扩展函数与近红外感兴趣区（ROI）的平均相关R = 0.43±0.07。半径为26 mm的球形roi在所有皮质网格节点上的EEG和NIRS平均值之间的相关性最大。在设计神经血管耦合的多模态研究和使用近红外光谱作为脑电图源定位的统计先验时，应考虑脑电图和近红外光谱之间的这些敏感性相关性。
This study investigates the correspondence of the cortical sensitivity of electroencephalography (EEG) and near-infrared spectroscopy (NIRS). EEG forward model sensitivity to the cerebral cortex was calculated for 329 EEG electrodes following the 10-5 EEG positioning system using a segmented structural magnetic resonance imaging scan of a human subject. NIRS forward model sensitivity was calculated for the same subject using 156 NIRS source-detector pairs selected from 32 source and 32 detector optodes positioned on the scalp using a subset of the 10-5 EEG positioning system. Sensitivity correlations between colocalized NIRS source-detector pair groups and EEG channels yielded R = 0.46 ± 0.08. Groups of NIRS source-detector pairs with maximum correlations to EEG electrode sensitivities are tabulated. The mean correlation between the point spread functions for EEG and NIRS regions of interest (ROI) was R = 0.43 ± 0.07. Spherical ROIs with radii of 26 mm yielded the maximum correlation between EEG and NIRS averaged across all cortical mesh nodes. These sensitivity correlations between EEG and NIRS should be taken into account when designing multimodal studies of neurovascular coupling and when using NIRS as a statistical prior for EEG source localization.