Electroencephalography (EEG) is a non-invasive technique used to record the electrical activity of the brain. This activity is generated by the billions of neurons that make up the brain. By attaching electrodes to the scalp, EEG can measure and record these electrical signals, which are then visualized as waveforms on a computer screen.
* Niedermeyer, E., & Lopes da Silva, F. H. (2005). Electroencephalography: Basic principles, clinical applications, and related fields. Lippincott Williams & Wilkins.