Conductive gel bridge sensor for motion tracking in simultaneous EEG-fMRI recordings
Conductive gel bridge sensor for motion tracking in simultaneous EEG-fMRI recordings
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DOI：
10.1016/j.eplepsyres.2018.12.008
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发表时间：
2019-01-01
影响因子：
2.2
通讯作者：
Medvedovsky, Mordekhay
中科院分区：
文献类型：
--
作者：
Cohen, Noa;Tsizin, Evgeny;Medvedovsky, Mordekhay
脑电图-功能性磁共振成像（EEG - fMRI）能够定位神经活动的血液动力学相关性，并且已被证明在难治性癫痫的术前评估中作为一种诊断工具是有用的。然而，脑电图记录可能会受到磁场内运动所引起的伪影的严重干扰，从而使扫描结果难以解释。现有的运动校正方法需要额外的设备或硬件改造。我们介绍一种用于运动伪影检测的简单方法，即导电凝胶桥传感器（CGBS），使用标准装置即可轻松应用。我们报告了在两名癫痫患者中使用CGBS的实例，并证明了该方法能够成功区分大脑活动时段和运动时段的能力。
EEG-fMRI allows the localization of the hemodynamic correlates of neural activity and has been shown to be useful as a diagnostic tool in pre-surgical evaluation of refractory epilepsy. However, EEG recordings may be highly contaminated by artifacts induced by movements inside the magnetic field thus rendering the scan difficult for interpretation. Existing methods for motion correction require additional equipment or hardware modification. We introduce a simple method for motion artifact detection, the conductive gel bridge sensor (CGBS), easily applicable using the standard setup. We report examples of CGBS use in two patients with epilepsy and demonstrate the method's ability to successfully differentiate between epochs of brain activity and those of movement.