EEG signs of cerebrovascular disorder, using physical exercise as a provocative method.

A group of patients suffering from cerebrovascular insufficiency was submitted to a pilot EEG investigation using physical exercise as a provocative method. Two control groups, one of young (20--30 years) and another of older (more than 50 years) subjects, were also investigated. Quantitative EEG spectral data, determined at rest and during a period after physical exercise, showed that deviations of the frequency distribution of the alpha band were related to cerebrovascular insufficiency.