oa South African Medical Journal - Clinical significance of electroencephalography



1. International standards for the establishment and functioning of EEG departments are outlined and the necessity for their observance stressed. Methods of EEG recording, analysis and interpretation are noted. 2. A survey of the EEG's of 350 epileptic and 24 cerebral organic patients is presented; 61 % of the former and 83% of the latter showed abnormal EEG's. Approximately 8% of the EEG's of the epileptic group were converted by rhythmic photic stimulation from normality or non-specificity to positive diagnostic abnormality. 3. A detailed qualitative analysis of the normal, questionable and abnormal features encountered in both spontaneous and activated EEG's is presented.


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