Abkhazia Institute for Social and Economic Research

The original measuring Complex, on the basis of non-invasive methods of the examination of blood circulation, and Software, which form Anthropos  System, allows to receive the perfect appraisal of the state of blood circulation on the basis of simultaneous registration of all main central and peripheral haemodynamic parameters, including brain circulation, and to carry out the dynamic control over the state of the man's organism. It provides the realization of the Anthropophysiological Approach in diagnostics. The given Approach is orientated as principal man's biological quality to walking in the upright position and connected with it the significance of the gravitational factor on typical for man postural conditions of the vital activity.

The method of tetrapolar reoencephalography (REG) occupies the special place among set of methods for research of cerebral circulation. The simplicity and non invasiveness have made this method irreplaceable in many medical applications, where it is necessary durably, in various conditions to receive the information about cerebral circulation.
Technically, the method of REG developed almost perfectly, and the quality of a registered signal usually is quite satisfactory [4]. However, because its low adequacy and low reproducibility of received data, method of REG is frequently criticized. There are two main reasons that formed this kind of image concerning to REG method: 1) a various capacitive reactance in electrode-skin contact site, depending on a method of electrodes application and 2) problems with processing of reoencephalogram, more often which is connected to exact identification of a beginning and end of systolic wave.
It is well known that REG gives the integrated information about blood flow in whole volume between electrodes and, accordingly, simultaneously reflects many processes: arterial inflow, capillary flow, venous outflow etc. Change of these processes is very diverse from systole to systole and finds the reflection on an integrated picture of REG, sometime essentially modifying reoencephalogram. Application of differential reoencephalography markedly reduces amount of errors at the analysis and essentially raises correctness and reproducibility received parameters of blood circulation [3]. The basic methodical problem of REG, is attempt to treat received data irrespective of correlation existing between cerebral circulation and central, systemic circulation. Despite well-known autonomy, processes proceeding in the system of cerebral blood flow regulation closely are related with system of central circulation. Condition of the latter can be rather adequately evaluated only by an estimation of the interrelated characteristics, such as volume of blood, vessels capacity, pump function of heart, blood flow, with consideration of circulation in such regions as lung, abdomen, lower limbs.