Comparative characteristics of bioelectric activity of the brain in long-livers from different regions of the Republic of Azerbaijan
Research article: Comparative characteristics of bioelectric activity of the brain in long-livers from different regions of the Republic of Azerbaijan
Authors: Y.O. Bayramova*, U.F. Hashimova
Academician Abdulla Garayev Institute of Physiology, Azerbaijan National Academy of Sciences, 78
Sharifzadeh Str., Baku AZ1100, Azerbaijan
*For correspondence: bayramova.physiolog@gmail.com
Accepted for publication: 17 April 2020
Abstract: With application of modern technique of computerized electroencephalography comparative data of spectral-frequency analysis of baseline electroencephalography of the long-livers having high in- dexes of longevity and living in southern part of Azerbaijan – in Lenkoran (most of the areas are plains) and Lerik (mountainous) regions – are presented in the article. The undertaken electrophy- siological studies revealed resembling and different features in the electroencephalogram (EEG) of the long-livers’ populations within the different geographic areas of Azerbaijan. On the basis of comparative analysis of the recordings of baseline EEG of the long-livers of both regions one can reveal protective and inhibitory effects of the sub-cortical structures on the activity of the cortex (coming from prevalence of the indexes of delta- and theta-rhythms) accompanied with their low activities. However, in the long-livers of the Lerik region, in contrast to the long-livers of the Len- koran region, compensatory upregulation of the activating effect of the mesencephalic reticular for- mation to the brain cortex was noticed. Along with the general properties of EEG, the differences in EEG patterns indicate different directions of the activation of the brain compensatory mechanisms, which gives grounds to put forward the conjecture saying that in relation to age-related changes, reorganization of neurons’ communications in the central nervous system and support of high level of the brain activity in the long-livers require engagement of much more internal resources.
Keywords: Long-livers, electroencephalogram, spectral analysis, spectral power, index, brain functional state.
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