The use of computer analysis for diagnosis in routine electroencephalography.

1. Frequency power spectra and mutual coherence functions of 8 stimulatenously recorded E.E.G. derivations have been computed in approximately 500 non-specially selected patients referred to the department for E.E.G. recording. 2. On basis of the data obtained some provisionnal conclusions have been drawn, the most important of those being that the analyses contribute significantly and in some cases essentially to the understanding of the E.E.G. and therefore should be carried out in all E.E.Gs recorded to our department. 3. It has been observed that mu rhythms and beta rhythms appear to be essentially different from alpha rhythms by exhibiting no bilateral coherence whereas alpha rhythms almost invariably are considerably bilateral coherent.