[Relation of the autonomic components of the orientation reaction in pilots to the nature of incoming information].

The influence of the pattern of the information (certainty and significance) which reaches the pilot on the physiological parameters of his orientation reaction (skin-galvanic reflex, heart rate, electromyography) was examined. Two experimental series -- on the simulation stand and in real flight -- were carried out. The obtained data show that the pattern of the orientation reaction is related to the information certainty and significance. The responses of physiological parameters to significant elements of the situation are shown to be phasic.