Особливості коркової активності та мозкового кровотоку при виконанні розумових завдань в осіб, що постраждали внаслідок аварії на Чорнобильській атомній електростанції

Дослідження впливу хронічної дії малих доз іонізуючого випромінювання на електроенцефалографічні характеристики мозкової активності людини та церебральну гемодинаміку при виконанні розумових завдань. Вплив опромінення на зміни кровотоку в мозку.

Рубрика Медицина
Вид автореферат
Язык украинский
Дата добавления 27.08.2014
Размер файла 75,4 K

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The dissertation on competition of the scientific degree of candidate of biological sciences behind the speciality 03.00.13 - Human and animals physiology. - Taras Shevchenko Kyiv National University, Kyiv, 2006.

The research of influence of chronic action of an ionizing radiation in small dozes on electroencephalographic characteristics of brain activity of the person and cerebral hemodynamics by execution of intellectual tasks is carried out.

It is shown, that for the people who lived from the moment of a birth in the conditions of raised level of radiation any pathological changes of brain activity as a whole are not characteristic. Under the influence of external factors the specific mechanisms of intergrated innercortex connections which create a stable morphofunctional basis for effective realization of processes of training and optimization of organism's adapted reactions to cognitive loadings are formed. However these mechanisms are characterized by some surplus what can be the display of functional immaturity of a brain bark at people who have fallen under the influence of chronic action of an ionizing radiation in small dozes.

Change of a brain bleeding at execution of intellectual tasks consists in increase of speed of blood current at rather constant volumetric bleeding what is accompanied by a constriction of brain vessels and increase of ЧСС. Thus it is marked that the inhabitants of the radioactive polluted areas have a decrease in functional lability of a bleeding in average and small vessels, and also the lowest sizes of amplitude parameters of a rheogramm, what testifies about the presence of vegetative-vascular dysfunction of a blood channel.

The revealed features of cerebral electric activity of the inhabitants of radiationally polluted areas in association with the decrease of the general brain bleeding and its smaller functional lability in reply to intellectual loading create danger of fastening of the functional displacements which at the moment of inspection have compensatory character.

Key words: electroencephalography, rheoencephalography, cerebration, small dozes of radiation, brain electric activity, cerebral hemodynamics.

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