ABSTRACT
References 133
The last century saw great progress in electrophysiological techniques. Conventional electroencephalography was effectively founded in the 1920s when it became possible to record such activity from the scalp. Evoked potentials and event-related potentials were first developed in the 1950s and 1960s, respectively. Quantitative analysis of the electroencephalogram (qEEG) became possible in the 1970s and recording of electromagnetic activity of the brain in the 1980s. Since then, methods of data acquisition and analysis have become ever more sophisticated.
