Elbert T, Lutzenberger W, Rockstroh B, Birbaumer N
Electroencephalogr Clin Neurophysiol. 1985 May;60(5):455-63. doi: 10.1016/0013-4694(85)91020-x.
The present paper describes the propagation of ocular potentials across the scalp on a biophysical basis. It is concluded that 3 EOG derivations (two for EEG records along the midline) are generally necessary to account for ocular disturbances in the EEG. The inadequacy of many methods suggested for EOG artifact control may be due to the false assumption that just one EOG derivation provides enough information to remove ocular potentials from any EEG recording along the mid(-sagittal) line. A comparison of compensation with one or with two EOG derivations is described for a data set of slow brain potentials. A frequency dependence of the ocular influence cannot be neglected, if fast and slow EOG activities have to be removed. The present considerations should allow a more theoretically based decision of the EOG correction method necessary for a certain data set.
本文基于生物物理学原理描述了眼电位在头皮上的传播。得出的结论是，一般需要3个眼电图（EOG）导联（其中两个用于沿中线记录脑电图）来解释脑电图中的眼电干扰。许多针对EOG伪迹控制所建议方法的不足之处，可能是由于错误地假设仅一个EOG导联就能提供足够信息，以从沿中（矢状）线的任何脑电图记录中去除眼电位。针对一组慢脑电位数据集，描述了使用一个或两个EOG导联进行补偿的比较情况。如果要去除快速和慢速EOG活动，眼电影响的频率依赖性不可忽视。目前的考虑应有助于基于理论对特定数据集所需的EOG校正方法做出更合理的决策。
