Cerebral Energy Exchange as a Marker of Adaptive Human Reactions in Natural Climatic Conditions of the Arctic Zone of the Russian Federation

Abstract

The aim of the work was to fix changes of cerebral energy processes in the adaptive reactions of the human CNS in conditions of the Arctic zone of the Russian Federation. Methods. The energy state of the brain was analyzed in different age groups (795 people in total), constantly living in the Arctic zone of the Russian Federation: children 7-10 years old, young people 18-20 years old, elderly people 60-70 years old. Cerebral energy processes were estimated according to the data of the level distribution of the direct constant potential (DC potential) by means of the five-channel hardware-software complex "Neuro-KM". Besides, the level of constant potential was tested in young people (18-20 years) arrived from India to study in the northern university. The reaction of constant potential level on local cooling was determined both in Indian students and students-northerners at the initial training. Results. It was revealed that adaptive reactions of distribution of the brain constant potential level in climate and geographical conditions of the region were characterized by unidirectionality and lack of action specificity, both in natural, and in the simulative conditions irrespective of the age, sex and northern length of service. At the same time reorganization of energy processes finds the reflection in high amplitude of DC potentials of a brain, violation of the dome principle and formation dominance of right hemisphere, both in people constantly living in these territories, and in migrants. Similar changes also happened in local cooling test. Conclusion. Changes of the cerebral energy processes reflecting adaptive reactions of CNS of the person, in particular, distribution of DC potential in a cerebral cortex can be considered as "syndrome of the adaptive surplus of cerebral energy exchange".

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