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".
The article presents the views of domestic and foreign scientists on the relationship of anxiety and intellectual activity. The interrelations and dependences of intellectual activity on the level of anxiety have been described. Anxiety is a subjective manifestation of the unfavorable interaction of the individual with the environment. The optimal level of anxiety can have a positive impact and help to mobilize activity and achieve the best result. The high level of anxiety will prevent the normal development of adaptive processes. Intelligence as a capacity is considered as an independent reality based on the criterion of behavior regulation. The method of internal organization of an integrated system of intelligence is a cross-functional communication of mental functions of different levels (memory, thinking, attention). If we consider intelligence as certain ability, it is necessary to talk about the adaptive value of intelligence for a human. High anxiety can prevent formation of adaptive behavior and lead to a disturbance of behavioral integration, reduce the possibility of self-actualization. High anxiety in children prevents effective schooling, reducing the ability to concentrate and mental performance, worsening the information reproduction and associative thinking. Anxiety can cause school neuroses, failure to adapt to a new situation, difficulties in intellectual activity, reduce mental performance, and cause difficulties in communication and establishing interpersonal relations with other people. Anxiety is a serious risk factor for the development of psychosomatic disorders and often causes stress. The results of the studies prove the data that high anxiety has a disruptive influence on the effectiveness of human intellectual activity. In this regard, the study of the anxiety nature and its impact on the intellectual and personal development of the child is of particular importance and relevance.
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