Seasonal changes in cerebral metabolism in young people from the Russian arctic with different levels of anxiety

Aim. The paper aims to describe annual changes in cerebral metabolism in working age people with different levels of personal anxiety born and raised in the Russian Arctic. Material and Methods. The study of annual neural and energy metabolism in people aged 30-34 years old born and raised in the Russian Arctic was performed in all seasons of the year. Energy metabolism was evaluated with a 5-channel Neuro-KM system for the topographic mapping of cerebral electrical activity with respect to the level of constant potential. Results. A close relationship was found between the light regime, cerebral metabolism and anxiety among the residents of the Russian Arctic. Negative changes in cerebral metabolism occured in highly anxious subjects in summer at maximum natural light. In seasons with different natural light, highly anxious people were characterized by changes in cerebral metabolism with its increase in the frontal and occipital areas and a decrease in the temporal areas. In moderately anxious persons, the maximum values of neural and energy metabolism were recorded in winter, while the minimum values were observed in summer; in the summer period, there was an activation of metabolism in the frontal and occipital areas and a decrease of metabolic processes in the cerebral cortex. Conclusions. Due to the high sensory reactivity of the body, the processes associated with cerebral metabolism are more intense in people with high levels of anxiety under light conditions.