problems, pespectives

2001, Volume 1, Issue 1, p. 21-23

K. Bogdanov,  G. Piralishvili

Research Institute of Addiction, Tbilisi

The influence of Transcranial Electrical Stimulation (TES) Parameters on the Formation of Electrical Action Characters of CNS


The aim of this work was to study the influence of TES on the spontaneous brain bioelectric activation in healthy volunteers. Cranial localization of the irritative electrodes and TES parameters were optimised.
110 investigations were carried out on 24 volunteers (10 male and 14 female). 11 varieties of  TES were investigated including one placebo group with the double blind method. TES was continuing for one hour with dynamical control of pulse, blood pressure and EEG.
We have obtained the best results from irritating mastoid areas (with anode- left, cathode- right) at both fast and low frequencies. The investigation showed us that TES improved the quality of brain bioelectric activation under these conditions.
The investigated persons showed sharply expressed negative sensitivities during frontal areas stimulation, as shown by the EEG results.
In the placebo group changes were noticed in 21.4%;  7% were negative changes and 14.4% showed EEG positive dynamics.