[Rheoencephalographic studies in healthy subjects of various age groups]

The purpose of this study was to establish rheoencephalographic value in 90 healthy subjects aged from 20 to 80 years divided into 3 groups. The investigations were done with a two-channel rheographic apparatus produced by Siemens. The so-called rheography II technique was applied. In each subject measurements were done bilaterally in temporal, parietal and central leads. The curves were evaluated in relation to the ECG curve, taking into account the duration in sec. of two parts of the rheographic curve called I and II intervals. The correlation between the size of intervals I and II and the sex, age, side of measurement and area of measurement was subjected to statistical analysis.