[Unification of extreme levels of exposure to flight factors of different energy nature].

The factors of a various energetic nature the extreme levels of which both directly (via special receptors) and mediately influence and change the functions of nervous system are studied. Empirical data suggest conclusively that the general biological regularities of the effects of an "intensity-time" type is also valid on the organism level if the central nervous system is thought of as an irritable object. In all cases the initial cause of the disturbed cerebral activity is an external energetic irritative action. It is demonstrated that the character of human response to the extreme effects of some flight factors corresponds to general biological regularity of the reaction toward irritating stimulus. In this case the general mechanism of such reactions of the nervous system is an exhaustion of the energetic brain resources. There have been derived the equalities which define the quantitative relationships among the equivalent levels of extreme flight factor effects and the common unit of their measurement is introduced. On the basis of general biological regularities of the body response to irritating stimulus, the method for estimating and predicting useful consciousness time of the pilot in case of a combined effect of the flight factors under extreme conditions is suggested. For some flight factors (altitude, flight accelerations, noise, ionizing radiation) there have been obtained the qualitative indices enabling one to apply this method to solve the practical tasks. The set algorithm can be fed in personal computers and extended to other flight factors.