用于稳态视觉诱发电位检测的单极和双极脑电图记录的比较。
A comparison of monopolar and bipolar EEG recordings for SSVEP detection.
作者信息
Diez Pablo F, Mut Vicente, Laciar Eric, Avila Enrique
机构信息
Gabinete de Tecnología Médica (GATEME), Universidad Nacional de San Juan (UNSJ), Argentina.
出版信息
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:5803-6. doi: 10.1109/IEMBS.2010.5627451.
This paper presents a comparative study over the detection of Steady-State Visual Evoked Potential (SSVEP) with monopolar or bipolar electroencephalographic (EEG) recordings in a Brain-Computer Interface experiment. Five subjects participated in this study. They were stimulated with four flickering lights at 13, 14, 15 and 16 Hz and the EEG was measured simultaneously with two bipolar channels (O(1)-P(3) and O(2)-P(4)) and with six monopolar channels at O(1), O(2), P(3), P(4), T(5) and T(6) referenced to F(Z). The EEG was processed by means of spectral analysis and the estimation of power at each stimulation frequency and its harmonics. In average, the monopolar recordings present accuracy in classification of 74.5% against an 80.1% for bipolar recordings. It was found that bipolar recording are better than monopolar recordings for detection of SSVEP.
本文介绍了在脑机接口实验中，使用单极或双极脑电图（EEG）记录来检测稳态视觉诱发电位（SSVEP）的对比研究。五名受试者参与了本研究。他们受到13、14、15和16赫兹的四盏闪烁灯刺激，同时通过两个双极通道（O(1)-P(3)和O(2)-P(4)）以及六个以F(Z)为参考的位于O(1)、O(2)、P(3)、P(4)、T(5)和T(6)的单极通道记录脑电图。通过频谱分析以及对每个刺激频率及其谐波的功率估计来处理脑电图。平均而言，单极记录的分类准确率为74.5%，而双极记录为80.1%。研究发现，在检测SSVEP方面，双极记录优于单极记录。
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