Analysis of information sources in references of the Wikipedia article "Electroencephalography" in English language version.
[...] electroencephalographic (EEC) methods [...]. In a typical EEC experiment, an electrode is attached to a person's scalp in order to detect the electrical activity of neurons in the underlying brain region. Another electrode is then attached to the person's earlobe, where there is no electrical activity to detect. Then the EEC is recorded to indicate the difference in electrical potentials detected by the electrodes [...]. In recent years, a considerable amount of research has been conducted on EEC activity in athletes [...].