The monograph is a theoretical generalization and the results of the experimental study of the reactions of the human ultraslow control system according to the study of electrophysiological processes of the brain in the range 0 0 ,. 05 Hz under extreme effects, Conditions of Examination Stress , Conditions of production of aromatic compounds and their derivatives , Working Conditions of Firefighters and Working Conditions . [ Approaches to the analysis of experimental models based on ideas about the fundamentality of the ultra-slow contour of regulation of the functional state of the CNS, cardiovascular system and blood system. are proposed. The information presented in the monograph is intended for specialists in the field of neurophysiology, psychophysiology and physiology of extreme states, occupational physiology, environmental physiology, as well as students and postgraduates of universities of relevant specialties .