Overview of EEG, Electrode Placement, and Montages

Brain works with electricity. EEG records the electrical activity of the neurons in the brain. The international 10–20 system is used for electrode placement. A bipolar montage method of electrode placement localizes abnormal brain discharges as phase reversal, while in a referential montage the amplitude of the waveforms localize epileptiform abnormalities. This chapter describes the EEG leads application methods, montages as well as filter and amplifier settings in a simple and easy to understand way.