[Electrical activity of the brain in different ventilation mode and its relationship with pattern of quite breathing and forced expiratory indices].

The influence of hyperventilation on electric activity of the brain has traditionally been the subject of study of physiologists. The role of the brain in the processes of adaptation to cold air inhalation is still studied not enough. The aim of the work is to define the peculiarities of brain reaction to isocapnic hyperventilation with cold air and identify correlation between its electric activity against different modes of ventilation and the pattern of breathing and parameters of the forced expiration. 21 healthy volunteers went through complex functional examination. Qualitative differences of relative power of theta rhythm at isocapnic hyperventilation with cold air were found out. The peculiarities of correlation between brain electric activity during cold provocation and breathing pattern and bronchomotor tone were revealed.