Karimi Fatemeh, Kofman Jonathan, Mrachcz-Kersting Natalie, Farina Dario
Annu Int Conf IEEE Eng Med Biol Soc. 2016 Aug;2016:1576-1579. doi: 10.1109/EMBC.2016.7591013.
Movement related cortical potential (MRCP), a slow cortical potential from scalp electroencephalogram (EEG), has been the used in real-time brain-computer-interface (BCI) systems designed for neurorehabilitation applications. Detecting MPCPs in real time with high accuracy is essential for a reliable BCI system in these applications. In this study, we investigated the effect of four spatial filters on MRCP detection during executed and imagined dorsiflexion of healthy participants. Our analysis indicated that, in both executed and imagined movement datasets, none of the methods investigated significantly improved trial-to-trial consistency of MRCP. However, all four spatial filters significantly enhanced signal to noise ratio (SNR) of the MRCPs, which is critical to achieve a high true-positive rate in MRCP detection.
运动相关皮层电位（MRCP）是头皮脑电图（EEG）中的一种慢皮层电位，已被应用于为神经康复应用设计的实时脑机接口（BCI）系统。对于这些应用中的可靠BCI系统而言，高精度实时检测MPCP至关重要。在本研究中，我们调查了四种空间滤波器对健康参与者在执行和想象背屈过程中MRCP检测的影响。我们的分析表明，在执行和想象运动数据集中，所研究的方法均未显著提高MRCP的逐次试验一致性。然而，所有四种空间滤波器均显著提高了MRCP的信噪比（SNR），这对于在MRCP检测中实现高真阳性率至关重要。
