Evoked potentials and behaviour. Paper presented at the Symposium held in Amsterdam, September 1969, sponsored by the International Ergonomics Association.

The electrical activity that can be recorded from the surface of the human head, the so called electroencephalogram (EEG) has been used, apart from its clinical application, in psycho-physiological studies. Common techniques are briefly summarized and some examples of application in vigilance studies, attention and expectation studies are given.