Brain injuries are difficult to prove and the lawyer must use all demonstrative evidence available to him to make the jury aware of the injury to his client. The electroencephalogram, though it has only been used as a diagnostic tool and as demonstrative evidence for the last fifteen to twenty years, is becoming more important in this field. It is becoming a more exact science and, it is believed, will be used more widely in the future. There does not appear to be any great problem of admissibility where they are properly identified, performed by competent technicians, using adequate equipment, and which accurately represent the information they are intended to reveal. If they serve the cause of justice and are relevant and material to the medical issues to be determined, courts everywhere will admit them for tha tpurpose.
Walter P. Mahle, Medico-Legal Aspects of the Electroencephalogram, 11 Clev.-Marshall L. Rev. 544 (1962)