[Informational operator-computer interactions under the effects of unfavorable environmental factors].

This paper discusses changes in the psychic functions of an operator working in the interactive mode under the influence of adverse environmental effects that cannot be modified. It is postulated that in this situation the strategy of solving operational problems may transform due to changes in the structure of decision taking. The paper describes simulation of operator's activities involved in controlling information flows in a stressful environment of two degrees of complexity.The investigations demonstrated a trend for a decline of operator's work capacity, helped develop mathematical models to predict performance variations in an extreme environment, as well as formulate recommendations as to how computer-interaction efficiency can be increased.