Evaluation of the functional state of operators with allowance for individual psychological characteristics

Abstract

The article deals with the features of the evaluation of changes in functional state during the professional activity of operators. We estimated the dynamics of the functional state and efficiency of operatorsunder the effect of aircraft noise and individual psychophysiological characteristics. We also investigated changes in the functional state of operators depending on their psychological characteristics. It was found that changes in the functional state of the organism in operators with high level of anxiety, low degree of extroversion and high emotional lability were more pronounced in the modeling of operator activity with exposure to aircraft noise, as evidenced by significant changes in psychophysiological parameters. After 60 minutes of noise stress, the latent period of a simple and a complex sensorimotor reaction in introverts increased by 9.1% (p < 0.05) and 8.1% (p < 0.05), respectively. In the group of subjects with high level of anxiety, there were a decrease in the general state, activity and mood by 18.9% (p < 0.01), 20.9 and 14.9% (p < 0.05), respectively, and a decrease in the accuracy of reaction to a.moving object by 3 times (p < 0.05). The latent period of simple sensorimotor reaction in emotionally labile subjects after the exercise was increased by 15% (p < 0.05), and the reaction time on a moving object was increased by 8:9% (p < 0.05) as compared with the group of emotionally stable sub- jects. Thus, the data suggest that changes in the functional state of operators depend on the level of extroversion, personal anxiety and emotional lability and do not depend on'the level of behavioral regulation, which must be taken into considerationduring the assessment of functional state.