PATHOLOGICAL ELECTROENCEPHALOGRAPHIC SYMPTOMS AND SYNDROMES

Abstract

The paper provides a project of classification of electro-encephalographic changes focused upon identification of ‘symptom-syndrome-type’ levels making respective allowance for localisation and running time of electroencephalogram (EEG). The project is based upon the use of five types of EEG identified by E.A. Zhirmunskaya (1991) and patterns of EEG analysed by H. Lüders (2000). The EEG-symptom is defined as changes likely to exhibit specific pattern (graphoelement). All symptoms are divided into two groups. These are non-pathological ones being considered as normal variant and pathological EEG-symptoms. A special consideration is given to EEG artefacts and principles of drawing up a medical assessment report. The proposed classification will facilitate differential diagnosis of the diseases that are known to cause changes in the characteristic features of brain bioelectrical activity and allow to consider EEG as a leading method of assessing brain pathology.