Fehmi L G, Sundor A
Int J Psychosom. 1989;36(1-4):23-33.
Roles of tradition, convenience, and noise or artifact rejection are discussed with regard to the monopolar versus bipolar electrode placement controversy in electroencephalography (EEG). Particular emphasis is placed on the relevance to biofeedback. The crucial interactions between the differential amplifier, brain waves, and monopolar/bipolar placements are discussed. Through logical analysis and empirical observation, it is demonstrated how the very nature of the EEG's differential amplifiers must destroy those elements of brain activity which are common to the recording electrodes. Controlled experiments further illustrate the critical importance of electrode placements. Various methods, including preferred electrode placements, are presented to help resolve recording problems that frequently arise. It is concluded that there are serious implications for researchers, EEG clinicians, biofeedback providers, and their clients in preferring one type of electrode placement technique over the other. EEG recording accuracy is affected by this choice.
就脑电图（EEG）中单极与双极电极放置的争议，讨论了传统、便利性以及噪声或伪迹抑制的作用。特别强调了其与生物反馈的相关性。讨论了差分放大器、脑电波和单极/双极放置之间的关键相互作用。通过逻辑分析和实证观察，证明了EEG差分放大器的本质必然会破坏记录电极共有的那些脑活动元素。对照实验进一步说明了电极放置的至关重要性。介绍了包括首选电极放置在内的各种方法，以帮助解决经常出现的记录问题。得出的结论是，对于研究人员、EEG临床医生、生物反馈提供者及其客户而言，偏好一种电极放置技术而非另一种具有严重影响。这种选择会影响EEG记录的准确性。
